Unity Double Penetration Strap On Harness - shown on model

Unity Double Penetration Strap On Harness - The Dildo Hub

Unity Double Penetration Strap On Harness

Unity Double Penetration Strap On Harness - packaging

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The quick take

Folks, meet the Unity Harness System — a fully adjustable dual-ring DP harness that fits waists up to 60 inches and accommodates virtually any O-ring compatible dildo for maximum versatility.… Read more

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What is a dual-ring DP strap-on harness? A dual-ring harness features two O-ring positions on a single harness — one for standard strap-on penetration and a second that enables simultaneous double penetration. The wearer can mount one dildo at each ring for true DP, or use a single ring as a standard strap-on. For penis-having wearers, the second ring positions a dildo alongside their natural anatomy for simultaneous penetration without a fully strapless setup. The Unity Harness System extends this further with interchangeable metal and silicone rings, ultra-inclusive sizing up to 60-inch waist, and snap-on straps for tool-free dildo changes. In our experience curating DP harness systems, the dual-ring design unlocks more play configurations than any other single harness type — one purchase, unlimited scenarios.

Product Description — Unity Double Penetration Strap On Harness

Folks, meet the Unity Harness System — a fully adjustable dual-ring DP harness that fits waists up to 60 inches and accommodates virtually any O-ring compatible dildo for maximum versatility. Two snap-on ring positions allow single strap-on or true double penetration configurations. Four included rings (two silicone, two metal — in 1.75 and 2 inch sizes) let you choose between flexible give or weighted rigidity for different dildos and play styles. Lightweight nylon construction keeps total weight at just 0.42 lbs without sacrificing stability. Use one ring or both, for strap-on play, DP adventures, or as a cock ring harness. Dildos sold separately.

Best for: Couples exploring double penetration, solo strap-on wearers wanting dildo versatility, penis-having folks seeking DP harness configurations. The 60-inch waist capacity makes this one of the most inclusive harnesses available. We've found that the interchangeable metal and silicone rings is the underrated feature — metal rings hold heavy dildos more rigidly during vigorous thrusting, while silicone rings give just enough flex for more forgiving fit. Always use water-based lube with silicone dildos. Ships from sunny California with discreet packaging, privacy-safe billing, and free mystery goodies.

Quick specs: Dual O-ring positions (1.75 in and 2 in), 4 included rings (2 metal + 2 silicone), nylon harness fits waists up to 60 in circumference, 0.75 in straps, snap closures, black, 0.42 lbs. Dildos sold separately.

🔮 Featured Compatible Dildos

Looking for the perfect fantasy dildo to pair with this harness? Our glitter silicone Magic Stick collection is harness-ready and body-safe. Browse the Magic Stick Glitter Silicone Dildo 9.5 Inch for dramatic length, or the Magic Stick Glitter Silicone Dildo 8 Inch for a versatile mid-size option. Both are phthalate-free, silicone, and O-ring harness compatible.

Key Features

At-a-glance features for the Unity DP Strap-On Harness
Dual O-ring positions	Two ring placements enable single strap-on or true double penetration configurations.
Fits up to 60 inch waist	Ultra-inclusive sizing — one of the widest-fitting harnesses available.
4 rings included	Two 1.75 in and two 2 in rings in both metal (rigid) and silicone (flexible) versions.
Snap-on strap system	Tool-free ring attachment for quick dildo changes between sessions or positions.
Metal ring option	Weighted rigidity keeps heavy or thrusting dildos firmly positioned during vigorous sex.
Silicone ring option	Slight stretch accommodates varied dildo base sizes with forgiving, comfortable fit.
Cock ring harness mode	Penis-having wearers can use the rings as a cock ring harness for DP with natural anatomy.
Fully adjustable nylon straps	0.75 in nylon straps cinch down to fit securely without chafing during extended wear.
Lightweight 0.42 lbs	Minimal weight ensures the harness doesn't fatigue the wearer during longer sessions.
Discreet shipping	Plain packaging, no product names or logos.

Specifications & Care

Measurements & Included Hardware

O-ring sizes: 1.75 in and 2 in inner diameter
Rings included: 4 total — one 1.75 in metal, one 2 in metal, one 1.75 in silicone, one 2 in silicone
Harness waist capacity: Up to 60 in circumference (fully adjustable)
Strap width: 0.75 in nylon
Attachment method: Snap-on straps (tool-free)
Ring positions: Dual (enables DP or single strap-on)
Materials: Nylon (straps), silicone (silicone rings), metal (metal rings)
Color: Black
Weight: 0.42 lbs (191 g)
Dildos sold separately — compatible with most O-ring harness dildos
Lube: Depends on dildo material used — water-based lube with silicone dildos

How to Use

Choose your ring size based on your dildo's base diameter — 1.75 inch for smaller bases, 2 inch for larger ones. Select metal rings for rigid hold (recommended for heavier dildos or vigorous thrusting) or silicone rings for flexible give (recommended for varying base sizes or comfort-focused sessions). Snap the chosen ring onto the harness strap at your preferred position. Thread your dildo base through the ring so it sits snugly. In our experience with dual-ring harness systems, mounting the primary penetrating dildo at the front position first, then adding any secondary dildo to the second ring, makes positioning easier than trying to thread both simultaneously.

Pull the harness on and cinch the nylon straps until snug against your hips — the harness should feel secure without cutting into skin. The 0.75-inch straps distribute pressure comfortably across the waist even at the maximum 60-inch capacity. For single strap-on use, only the front ring position is needed. For double penetration, mount a dildo at each ring position — one targeting vaginal penetration, one targeting anal, or both vaginal for intense simultaneous fullness depending on your partner's preferences and anatomy.

For penis-having wearers using the cock ring harness configuration, thread your penis and testicles through one ring (positioned against your body) while mounting a dildo at the second ring for true simultaneous DP. Customer feedback consistently shows that the metal ring option holds this configuration most securely during active thrusting — the rigid metal prevents ring shift that can occur with silicone during vigorous movement.

Care & Safety

Dildo compatibility: Works with any dildo featuring a flared O-ring compatible base. Measure your dildo's base diameter and select the matching ring size (1.75 or 2 inch). Bases should pass through the ring with minimal gap.
Ring selection guidance: We recommend metal rings for heavy dildos (over 1 lb) or during vigorous sex — the rigidity prevents the dildo from drooping or shifting. Silicone rings work better for lighter dildos or situations where base size varies slightly.
Lube with dildo material: Always match lube to your dildo's material — water-based lube for silicone dildos, water or silicone lube for PVC or TPR. Never use silicone lube with silicone dildos.
Cleaning: Hand wash nylon straps and silicone rings with warm water and toy cleaner. Wipe metal rings clean and dry immediately to prevent rust. Do not machine wash the harness.
Partner communication for DP: Double penetration requires clear, ongoing communication with your partner about comfort, depth, and pacing. Establish clear signals before the session — especially for simultaneous DP where internal pressure increases significantly.
Storage: Store harness coiled or flat, away from direct sunlight to preserve nylon strap integrity. Keep metal rings dry to prevent oxidation.

Why You'll Love It

The Unity Harness System delivers genuine versatility that single-ring harnesses simply can't offer. Two O-ring positions mean you're not locked into one configuration — run a single dildo for strap-on sex one session, mount two for true DP the next, or use it as a cock ring harness for penis-having wearers wanting to add a second penetration point to their natural anatomy. Four included rings (two sizes, two materials) extend that versatility further: swap between metal rigidity and silicone flex to match the dildo weight and play intensity of any given session without buying additional hardware.

The 60-inch waist capacity is the inclusivity standout. In our years curating strap-on harnesses, we've found that most harnesses max out at 40-50 inches, excluding a significant portion of folks who want to explore strap-on play. The Unity's nylon strap system adjusts all the way to 60 inches without compromising ring stability or strap security — the snap-on system holds firm regardless of waist size. The lightweight 0.42 lbs construction means even extended DP sessions don't fatigue the wearer, keeping focus on pleasure rather than equipment management.

Whether you're building a first strap-on kit around a versatile harness, upgrading to DP capability from a single-ring setup, or exploring cock ring harness configurations for simultaneous penetration, the Unity delivers a world of penetration possibilities from one adaptable foundation. Pair it with our Magic Stick Glitter Silicone Dildo 9.5 Inch or Magic Stick Glitter Silicone Dildo 8 Inch for a complete fantasy-style DP setup right out of the gate.

Frequently Asked Questions

What is the difference between the metal and silicone rings?

Metal rings are rigid with no give — they hold the dildo base firmly in one position regardless of movement or dildo weight. This makes them ideal for heavier dildos (over 1 lb), vigorous thrusting, or situations where dildo stability is critical (DP configurations). Silicone rings have slight stretch and flexibility — they accommodate minor base size variations more forgivingly, feel more comfortable against the body, and work better for lighter dildos or gentler sessions. Customer feedback shows that most experienced users keep both available and choose based on the dildo weight they're using that session.

How does double penetration actually work with this harness?

Mount a dildo at each of the two O-ring positions. Positioning depends on the play you want — one ring forward and one slightly lower for vaginal + anal DP, or both angled for dual vaginal if that's the goal. The wearer's thrusting motion drives both dildos simultaneously. In our experience, starting with the larger dildo at the primary (front) ring position and the smaller at the secondary provides easier entry for the receiving partner during initial penetration. Always establish clear communication signals with your partner before attempting DP.

How does the cock ring harness configuration work?

Penis-having wearers thread their penis through one ring (like a cock ring, positioned against the body at the base of the shaft), with testicles hanging through the base opening. A dildo is then mounted at the second ring position, sitting alongside the natural penis for simultaneous DP. The metal ring option works best here — it maintains firm positioning of both the cock ring function and the dildo mount during active thrusting. We recommend ensuring the cock ring fits comfortably before a session — snug enough to stay in place without restricting blood flow.

What dildo base diameter works best with each ring size?

The 1.75-inch ring works best for dildos with bases measuring 1.5-1.75 inches in diameter — snug enough to prevent movement without forcing. The 2-inch ring accommodates bases from 1.75-2 inches diameter. Customer feedback shows that using the silicone ring version allows a bit more flexibility here — a 1.9-inch base can fit the 2-inch silicone ring with a slightly snug stretch. Metal rings require a closer match to the stated diameter for optimal security. When in doubt, measure your dildo base before selecting ring size.

Does this harness work for plus-size bodies at 60 inches waist?

Yes — the 60-inch capacity is specifically designed for inclusive sizing. The nylon straps cinch fully from smaller waists all the way to 60 inches without compromising ring stability. Customer feedback consistently shows that plus-size wearers appreciate both the waist capacity AND the lightweight 0.42 lbs construction — heavy harnesses become uncomfortable quickly at larger sizes, while this featherlight nylon system remains comfortable throughout extended sessions regardless of body size.

Can I use my existing dildos with this harness?

Yes — any dildo with an O-ring compatible flared base works with this harness. The base needs a flat flange that's wider than the ring opening so it can't pass through. Suction cup bases also work with O-ring harnesses. The two ring sizes (1.75 and 2 inches) cover the majority of standard harness-compatible dildo bases on the market. We recommend measuring your dildo's base before assuming compatibility — bases significantly larger than 2 inches won't fit through either ring opening.

Are the Magic Stick glitter dildos the best pairing for this harness?

The Magic Stick 9.5 Inch and Magic Stick 8 Inch are both excellent pairings — premium silicone construction, harness-compatible bases, and stunning glitter aesthetic that pairs beautifully with the Unity's clean black design. For DP configurations, using one of each size (9.5 + 8 inch) provides size differentiation between penetration points that many people find comfortable. Both are phthalate-free and body-safe, pairing well with the harness for DP adventures.

One harness. Unlimited penetration configurations.

Add the Unity Double Penetration Strap On Harness to your cart for discreet California shipping, privacy-safe billing, and a mystery gift in every order.

Product Disclaimer: These products as with all products on this site are supplied AS IS. No warranty is given either implied or expressed. Products are intended as novelty only, and no representation is made or implied as to their suitability or safety for any particular use. Purchasers use the products entirely at their own risk. The manufacturer or TheDildoHub is not liable for any direct, indirect, incidental or consequential damage or loss howsoever arising caused by use or misuse of the products. This includes, but is not limited to, damage to the products and personal injury or damages due to use or misuse.

Shipping, Billing & Privacy

Name: Unity Double Penetration Strap On Harness
SKU: AD918
Price: 36.25 USD
Availability: InStock

Last Updated: August 2026

Your privacy travels with every order

From the moment you check out to the moment your package arrives, every step is designed so that what you buy stays entirely between you and us.

How we appear on your statement

Credit / Debit Card: Sp-Tdh-Br
PayPal: TDH Retail Ltd

Some banks may display a slightly different or truncated version of these descriptors — this is determined by your financial institution and is outside our control.

What Discreet Shipping Means

Every package we send is prepared with your privacy in mind. If someone sees your order on your doorstep, in your mailroom, or being carried by you, they will have no way to know what’s inside. Even carrier employees handling your package cannot tell from the exterior that it contains intimate products.

Plain Packaging: Orders are shipped in standard brown cardboard boxes or plain poly mailers, with no decorative branding.
No Branding: No product names, logos, or “TheDildoHub” branding appear on the exterior of your package.
Carrier Markings Only: The only external markings are the shipping label and carrier tracking information required for delivery.

Plain cardboard shipping boxes used for discreet packaging

Our Shipping Boxes

We use cartons from Stock Box Company and other established packaging suppliers. The specific packaging used may vary depending on your order’s size, weight, fulfillment location, and availability. Using cartons from different suppliers does not change the discreet nature of your shipment.

All boxes used for shipping are plain, unbranded, and selected to provide appropriate protection during transit. The Stock Box Company cartons pictured above are single-wall boxes supplied from Santa Fe Springs, California. Their printed certification states that they meet the construction requirements of the applicable freight classification.

The certification shown on these cartons lists the following specifications:

Bursting-Test Rating: 200 pounds
Minimum Combined Facing Weight: 84 pounds per 1,000 square feet
Maximum Size Limit: 75 inches
Maximum Gross Weight Limit: 65 pounds

These specifications apply to the pictured Stock Box Company cartons. Other boxes may have different manufacturer specifications, but all packaging used for your order is selected for safe transit and maintains the same plain and discreet presentation.

For suitable smaller or lighter shipments, we may use padded poly mailers instead of cardboard boxes. These mailers are also plain and unbranded, with no externally visible product descriptions.

Free Shipping

Free Super Saver Shipping applies automatically to all U.S. orders over $139 — no promo code needed. Every free shipment receives the exact same discreet packaging treatment as any paid tier. Your privacy is never a function of how much you spend.

Order Processing

All orders take 1–2 business days to process before they ship. Orders placed with Express, Priority, or Rush shipping are processed on the next business day. Processing time is separate from transit time, and the delivery estimates for each shipping method begin once your order has been packed and handed to the carrier.

Orders placed on weekends and federal holidays begin processing on the next business day.

Processing Time: 1–2 business days for all orders. Express, Priority, and Rush orders are processed the next business day.
Tracking Updates: Tracking information may take 24–48 hours to update after your order ships. If it hasn't moved after 48 hours, contact us.

Shipping Rates

All rates are flat per order — not calculated by weight. The same price applies whether you're in Manhattan or rural Alaska. TheDildoHub covers any additional carrier costs; you will never be charged more than the rate shown at checkout.

Domestic Shipping — United States

All 50 states · APO/FPO/DPO · U.S. Territories · PO Boxes

Method	Transit Time	Price	Typical Carriers & Services
Super Saver (Free)	7–10 Business Days	Free (>$139)	USPS Ground Advantage, FedEx Ground Economy, UPS SurePost, OnTrac Ground
Economy	5–7 Business Days	$10.95	USPS Ground Advantage, FedEx Ground, FedEx Home Delivery, UPS Ground, OnTrac Standard
Express	4–5 Business Days	$24.95	USPS Priority Mail, FedEx Home Delivery, UPS Ground, OnTrac Express
Priority	3–4 Business Days	$34.95	USPS Priority Mail Express, FedEx Express Saver, FedEx 2Day, UPS 3 Day Select, UPS 2nd Day Air
Rush	1–2 Business Days	$64.95	USPS Priority Mail Express, FedEx 2Day, FedEx Overnight, UPS 2nd Day Air, UPS Next Day Air Saver

Transit times begin after your order ships — processing time is not included. Times are estimates; carrier delays, weather, and peak volumes can affect delivery. If significantly delayed, contact us and we'll make it right.

About our domestic carriers

We use USPS, FedEx, UPS, and OnTrac for reliable nationwide shipping. Our fulfillment team automatically selects the best carrier based on your location, speed, and package details. You cannot select a specific carrier, but every carrier delivers in plain, unmarked packaging.

FedEx: Ground Economy, Ground, Home Delivery, Express Saver, 2Day, Overnight
UPS: SurePost, Ground, 3 Day Select, 2nd Day Air, Next Day Air Saver
USPS: Ground Advantage, Priority Mail, Priority Mail Express
OnTrac: Ground, Standard, Express

Why is Super Saver slower than Economy?

Super Saver uses the most cost-efficient routing available at the time of fulfillment — typically consolidators or ground services with longer transit windows. Paid tiers use faster, dedicated carrier services. The same discreet packaging applies regardless of speed.

Military address shipping (APO/FPO/DPO)

TheDildoHub is proud to serve American servicemembers. All military shipments go exclusively via USPS as required by military postal regulations. Tracking is always available. Delivery may take additional time due to military postal routing, but every shipment leaves with the same discreet packaging standards.

PO Box delivery

Yes, we ship discreetly to PO Boxes across the nation via USPS. In our experience, PO Box deliveries may take a little longer — typically 1–2 additional days at most.

Delivery instructions

You can add delivery instructions at checkout. Please note that while we pass these on to the carrier, we cannot guarantee they will be followed in all cases. If delivery privacy is a concern, we recommend selecting a tracked speed so you can monitor arrival.

Why we don't guarantee delivery dates

No carrier can truly guarantee delivery in practice. Even express services are subject to delays from weather, carrier volume, and other factors outside our control. Stating estimates rather than guarantees avoids confusion. If your shipment is significantly delayed, we'll work with you to make it right.

International Shipping — Worldwide

Canada · UK · Australia · New Zealand · European Union & more

Method	Transit Time	Price	Typical Carriers & Services
International Saver+	10–15 Business Days	$34.95	USPS First-Class International, DHL eCommerce, FedEx International Economy
International Standard	7–12 Business Days	$44.95	USPS Priority Mail International, UPS Standard, FedEx International Economy
International Priority+	4–6 Business Days	$64.95	DHL Express, FedEx International Priority, UPS Worldwide Expedited, USPS Priority Mail Express International
International Rush	2–5 Business Days	$84.95	DHL Express, FedEx International Priority, UPS Worldwide Express

Transit times are estimates from date of dispatch and exclude processing time. Customs clearance may add additional days. If significantly delayed, contact us.

International carriers we use

Our global carriers include USPS, UPS, FedEx, and DHL depending on destination and tier. All international shipments receive the same discreet packaging as domestic orders.

International Saver+: USPS First-Class International, DHL eCommerce, FedEx International Economy
International Standard: USPS Priority Mail International, UPS Standard, FedEx International Economy
International Priority+: DHL Express, FedEx International Priority, UPS Worldwide Expedited, USPS Priority Mail Express International
International Rush: DHL Express, FedEx International Priority, UPS Worldwide Express

Countries we ship to

We ship to Canada, the United Kingdom, Australia, New Zealand, and EU countries including Germany, France, Netherlands, Spain, Italy, and more. For a complete list, see our International Shipping Policy.

Full international shipping policy

For complete details — including customs duties, delivery times, and all supported countries — please visit our International Shipping Policy.

Where We Ship From

We operate several fulfillment locations across California and one on the East Coast for specific items, positioned to reach you quickly wherever you are in the US. Our system automatically selects the best facility based on inventory and proximity to your address.

Huntington Beach, CA 92649
Van Nuys, CA 91406
Whittier, CA 90601
Hightstown, NJ 08520

We do not publicly list a specific street address, as we maintain a closed, business-to-customer operation rather than a public retail storefront.

After Your Order Ships

Once your order is on its way, keeping tabs on it is easy — and if anything goes wrong, we're here to sort it out.

Order Confirmation Email: Your shipping notification contains a tracking link. Click it to follow your package in real time via the carrier's site.
Shop App by Shopify: Download the free Shop app to track all your orders from one place. Available on iOS and Android.
Lost or Missing Packages: If your tracking shows delivered but nothing arrived — or your shipment appears stuck — contact us right away. In most cases, packages are misrouted and located within a few days. If confirmed lost, we reship at no additional cost to you.
International Customs & Duties: International orders may be subject to customs duties, import taxes, or brokerage fees imposed by your country. These are not included in your order total and are the recipient's responsibility. See our International Shipping Policy for details.

Our Guarantee — 100% Satisfaction

For health and safety reasons, we do not accept returns on any item, used or unused. That said, we stand fully behind every product we sell.

Many of our products are USB or battery-operated, and on occasion a unit may arrive defective or stop working as expected. Our support team will first walk you through basic troubleshooting — often the quickest path to getting things working. If troubleshooting doesn't resolve the issue, we provide a hassle-free replacement at no additional cost.

How to request a replacement

Contact our support team — available 7 days a week.
Share your order number and product name along with a brief description of the issue.
If the defect is visible, include a photo — this speeds up the process significantly.
Once validated, your replacement ships promptly in the same discreet packaging.

Need help?

We're here seven days a week. Questions about your order, a shipment, or anything else — our support team has you covered.

We take real pride in our customer experience team. We're here to listen when you need to be heard. No chatbots, no AI customer service — just 100% discreet email support from real people.

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Unity Double Penetration Strap On Harness