Short answer: to use a knot dildo, warm up first, use plenty of water-based lube, take the shaft slowly, then rest at the knot and let your body open around it rather than pushing through. Choose your first knot by its diameter, not the toy's length: around 5.5 cm (2.2 in) is a sensible start if you are used to average toys.
The knot is the whole point of these toys, and it is also the part people rush. This guide walks through how to pick the right knot size, how to actually take it, and how to get it back out without drama.
What is a knot dildo?
A knot dildo is a fantasy toy shaped after canine and wolf-creature anatomy: a tapered tip, a shaft, and a round swelling near the base called the knot. The knot is wider than the rest of the shaft. Once it passes the sphincter, the muscle closes slightly behind it, which gives the "locked in" feeling of fullness people buy these toys for.
Variations you will see:
- Single knot: one bulb at the base. The classic.
- Double-lobe knot: two side-by-side swellings, so the pressure is wider rather than rounder.
- Double knot: two bulbs in a row along the shaft, a smaller one first, then a bigger one.
- Curved shaft: the tip angles forward, toward the prostate or G-spot.
How to choose your first knot size
Ignore the total length at first. The knot diameter is the number that decides whether your first session is fun or frustrating.
A practical way to judge it: take the widest toy you already use comfortably and measure its diameter (or wrap a tape around it and divide the circumference by 3.14). Your first knot should be only a little wider than that, not a jump of two centimetres.
For reference, here is what knot sizes mean in practice:
| Knot diameter | Circumference | Who it suits |
|---|---|---|
| 5.4 to 5.7 cm (2.1 to 2.2 in) | about 17 to 18 cm | First knot, if you already enjoy average-size toys |
| 6.0 to 6.8 cm (2.4 to 2.7 in) | about 19 to 21 cm | Second knot, or experienced with stretching |
| 7.0 to 8.5 cm (2.8 to 3.3 in) | about 22 to 27 cm | Experts who train up to size |
Across our knot dildo collection, knots run from 5.4 cm to 8.5 cm. Every product page lists the knot diameter and the insertable length, so you are not guessing from a photo.
How to take a knot, step by step
1. Prepare
Wash the toy with warm water and mild soap. Trim your nails if you will use your fingers. If you are going anal, a bathroom visit beforehand makes most people more relaxed. Lay a towel down, because you will use more lube than you think.
2. Warm up
Do not start with the knot toy cold. Arousal relaxes muscles, and a smaller toy or fingers for ten or fifteen minutes makes a real difference. The anus has two sphincters: the internal one, which you do not control consciously, and the external one, which you do. Warming up is how you get the internal one to cooperate.
3. Lube, then lube again
Use a thick water-based lube on the toy and on yourself. Silicone toys and silicone lube do not mix well over time, so keep silicone lube off them unless you have spot-tested it. Reapply before the knot, not after it has started to drag.
4. Take the shaft first
Go slowly with the tapered part and spend time just with the shaft. Breathe out as you push down or in. If you use the toy on its suction base (most knot dildos have one), you control the angle and pace with your hips, which many people find easier than working it by hand.
5. Rest at the knot
When you reach the knot, stop. Let it press without forcing it. Gentle rocking and steady pressure work better than pushing harder. You will feel the muscle soften, and then the widest part passes quite suddenly, that is the "pop" people talk about. If it does not happen today, that is normal. Plenty of people need several sessions before their first full knot.
6. Stay or move
Once it is in, you can stay still and enjoy the fullness, or rock gently with the knot seated. Big strokes in and out over the knot are the advanced version; do not start there.
7. Take it out slowly
Relax, add a little lube around the base, breathe out and ease it out in the same slow way it went in. Never yank. If it feels stuck, stop, relax for a minute, then try again. Your muscles tighten when you panic, so slowing down is what helps.
Safety: when to stop
- Sharp pain is a stop signal. Stretch should feel intense but not stabbing.
- Bleeding beyond a tiny trace means stop for the day and let things heal.
- Numbing lubes are a bad idea here. Pain is the feedback that keeps you safe.
- Only use toys with a flared or suction base for anal play, so the toy cannot travel further than intended. If something ever goes in that you cannot easily get out, see a doctor rather than waiting.
Good first knot dildos
Curvoor: 5.4 cm knot, 16 cm insertable, 393 g. The smallest knot in the range, with a forward-curved shaft that angles toward the front wall. A very good first knot.
Ignvoor: 5.7 cm double-lobe knot, 19 cm insertable, 388 g. The pressure spreads wider instead of rounder, which some people find easier to take.
Kraevoor Large: 6.1 cm knot, 18.3 cm insertable. The natural second step once 5.5 cm feels easy.
Duovoor: two knots in a row, 4.5 cm then 7 cm. The first knot is a warm-up for the second. For people who already know what they like.
And if you want to know what the top end looks like, Omnvoor carries an 8.5 cm knot at 1,265 g. That is a goal, not a starting point.
Cleaning after use
Warm water and mild soap, with a soft brush around the knot and base where lube collects. Rinse, let it air-dry fully, store it in a pouch away from sunlight. All our knot dildos are platinum silicone; if you want the reasons that matters, read platinum silicone vs TPE.
FAQ
Is a knot dildo good for beginners?
Yes, if the knot is modest (around 5.5 cm) and you are already comfortable with a regular toy. A knot is not a first toy ever.
How long does it take to take a knot?
Anywhere from one session to several weeks of gradual practice. There is no prize for speed.
Can I use a knot dildo vaginally?
Yes. The same rules apply: warm up, plenty of lube, rest at the knot and never force it.
What lube is best for knot dildos?
A thick water-based lube. It is safe for silicone toys and easy to clean. Reapply often.
Does the knot need to go in?
No. Many people enjoy the pressure of the knot against the entrance without taking it fully. Use the toy the way that feels good.
Sources
- Healthline, Sex Toy Injuries: What to Do, Why It Happens, How to Prevent Them, on flared bases and when to seek care.
- Product measurements: BeastyLov product specifications (knot diameter, insertable length, weight).
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