How does an inflatable knot dildo work? The knot is the bulge near the base of a canine-style shaft. On this dildo it can be inflated with a few squeezes, so you decide how wide it gets. Deflated, the widest point is 2.5 inches. Fully inflated, it reaches 3.2 inches. The usual approach is to insert the toy with the knot deflated, then add air a little at a time until the fullness feels right. Let the air out again before you remove it.
Hell Hound Inflatable Silicone Dildo: a knot you size yourself
The Hell Hound Inflatable Silicone Dildo is a fantasy dildo shaped like a canine shaft, in glossy red with a smooth, veined surface. It is 8 inches long overall, with 7.2 inches insertable. The narrowest part of the shaft is 1.3 inches across, and it widens to a knot at the base. That knot inflates, taking the widest point from 2.5 inches up to 3.2 inches.
The body is soft, flexible silicone. A wide base with a suction cup holds it on flat surfaces for hands-free use. The same flanged base fits most strap-on harnesses, so a partner can wear it. As for the lore, this is meant to be the anatomy of a hound from hell, and it looks the part.
Best for: Suits experienced users who like fantasy shapes and want to explore knots and stretching at their own pace. Because the girth is adjustable, it also works for people moving up from a mid-size dildo who are not ready for a fixed 3.2 inch knot.
At a glance: Inflatable knot · 7.2 in insertable · Silicone · Suction cup base · Harness compatible
Key features
| Inflatable knot |
Adds girth on demand, from 2.5 inches deflated to 3.2 inches fully inflated. |
| Canine-style shape |
A veined, glossy red shaft that swells to a knot near the base. |
| Gradual profile |
Starts at 1.3 inches wide, which eases the first inches before the knot. |
| Soft silicone |
Flexible, body-safe silicone that bends with your movements. |
| Suction cup base |
Press it onto a flat surface for hands-free use. |
| Harness compatible |
The wide flanged base fits most strap-on harnesses. |
Specifications
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Total length: 8 in
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Insertable length: 7.2 in deflated, 7.9 in inflated
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Narrowest insertable diameter: 1.3 in (deflated and inflated)
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Widest insertable diameter: 2.5 in deflated, 3.2 in inflated
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Base size: 3.7 x 3.2 in
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Materials: Silicone, stainless steel
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Color: Red
How to use
Wash the dildo before first use and check that the knot is fully deflated. For hands-free use, press the base firmly onto a clean, flat surface. Coat the shaft generously with water-based lubricant. Insert slowly, starting with the slim end, and stop wherever you feel comfortable. Once the knot is where you want it, inflate it one squeeze at a time and pause between squeezes. Never force it. Let the air out fully before you withdraw. To use it in a strap-on harness, fit the base into the harness ring before you start.
Care
- Use water-based lubricant only.
- Wash by hand with warm water and mild soap or toy cleaner after each use.
- Do not boil it or put it in a dishwasher, because of the inflation parts.
- Deflate the knot and dry the toy fully before storing.
- Store it apart from other toys, out of direct sunlight.
More on materials in our material safety guide.
Frequently asked questions
How big does the knot get?
The widest insertable point measures 2.5 inches across when deflated and 3.2 inches when fully inflated. You can stop anywhere between the two. The narrowest part of the shaft stays at 1.3 inches whether the knot is inflated or not.
Does inflating it change the length?
Slightly. The insertable length is listed as 7.2 inches with the knot deflated and 7.9 inches with it inflated. The total length of the dildo is 8 inches. Most of the change you feel comes from the added girth.
Will it fit my strap-on harness?
The wide, flanged base is described as compatible with most strap-on harnesses. The base measures 3.7 by 3.2 inches. Check that your harness ring can take a shaft that is 2.5 inches wide at the knot when deflated.
Which lubricant is safe to use?
Water-based lubricant only. The dildo is made of silicone, and silicone-based lubricants can damage a silicone surface. Use plenty on the shaft and the knot, and add more before you start to inflate.
Is this a good choice for a beginner?
It is a large toy. Even deflated, the knot is 2.5 inches across and the insertable length is 7.2 inches. Someone new to dildos will usually be more comfortable starting with something slimmer and coming back to this later.
Take control of the knot
Add the Hell Hound Inflatable Silicone Dildo to your cart for plain packaging, privacy-safe billing and a mystery gift in every order.
For adult use only. Read the instruction manual before first use. Specifications are the manufacturer's.
