Best Seller

The Tentacle: Knot

Q: What are the different firmness options?

We offer 4 firmness options: Medium Firmness - 10A on the Shore hardness scale Soft Firmness - 5A on the Shore hardness scale. Super Soft Firmness - 0040 on the Shore hardness scale Squishy Soft Firmness - 0020 on the Shore hardness scale For more information about our firmness options see our firmness guide .

£49

Size: X-Small

X-Small Small (+£10) Medium (+£20) Large (+£40)

Size Guide

Total:

£49

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Description

Based on our original Tentacle, the Swell has been designed for knot lovers. Its subtle tip, gentle curves, soft detailed suckers and a base are finished off with coral and sea-inspired details remain, but now there’s a gradual knot that will stretch and tease you until it pops inside.

Sizing

X-Small

Widest Point Circumference (Knot): 4.2" / 10.6cm
Base Circumference: 4.7" / 12cm
Insertable Length: 4.3" / 11cm
Total Length: 5.1" / 13cm

Small

Widest Point Circumference (Knot): 7.3" / 18.5cm
Base Circumference: 7.5" / 19cm
Insertable Length: 7.1" / 18cm
Total Length: 7.9" / 20cm

Medium

Widest Point Circumference (Knot): 8.7" / 22cm
Base Circumference: 9.1" / 23cm
Insertable Length: 8.7" / 22cm
Total Length: 9.8" / 25cm

Large

Widest Point Circumference (Knot): 9.3" / 23.5cm
Base Circumference: 9.6" / 24.5cm
Insertable Length: 10" / 25.5cm
Total Length: 11.6" / 29.5cm

Product FAQ

How does the cum tube upgrade work?

The Cum Tube Upgrade adds a silicone tube running along the entire length of the toy, connected to a syringe filled with liquid (water or lubricant). Apply pressure to the syringe, and voilà – the liquid expels through the toy's tip. A syringe is included, but you’ll need to purchase the lubricant separately.

What is the best knot dildo for beginners?

For those new to knot dildos, we recommend starting with our X-Small and Small sizes. These options are perfect for easing into the experience:

Dragon Knot - X-Small: With a 4.5" circumference knot, it's ideal for first-timers.
Knot II - X-Small: Also features a 4.5" circumference knot, providing a snug yet manageable fit.

For Intermediate Users:
If you're ready for a bit more intensity but prefer a shorter shaft, the Werewolf III X-Small is a great choice. It has a slightly larger 5.5" knot, so you can enjoy a bigger thrill without the extra length.

What is your biggest knot dildo?

In our current range, the two dildos with the largest knots are:

The Knot - Large: This beast packs a hefty 9.5" knot, perfect for those who want more.
The Werewolf - Large: For those who crave the ultimate challenge, this one features an incredible 10.6" knot.

Or see the full range of knot dildos here.

What are the different colour options?

We offer 6 different colour styles, though not all are available on every product.

Surprise Me Basic - Leave the decision in our capable hands and we'll choose a solid colour that compliments your toy selection.

Surprise Me Premium - Leave the decision to us and we'll get creative with two or more colours. We love this choice as it allows us to get experimental with all of our colours, often resulting in our best pours.

Solid - One colour that will run evenly throughout your toy

Fade - Two colours combined that are gradually blended together. Colour 1 will be the tip of your toy and Colour 2 will be the shaft and base.

Marble - Two colours combined resulting in a veining effect similar to classic marble.

UC Trademark - This is a product-specific colour. The main image of the product is the UC Trademark colour.

For more information, take a look at our colour guide.

What are the different firmness options?

We offer 4 firmness options:

Medium Firmness - 10A on the Shore hardness scale
Soft Firmness - 5A on the Shore hardness scale.
Super Soft Firmness - 0040 on the Shore hardness scale
Squishy Soft Firmness - 0020 on the Shore hardness scale

For more information about our firmness options see our firmness guide.

Why do you only use platinum silicone?

We use platinum silicone so you get a toy that is non-pourous (meaning when you clean it, it gets fully clean and can't transmit bacteria), doesn't smell, is body safe and feels fantastic.

If you'd like to learn more about cleaning your toys, read our sex toy care guide.

Reviews

I misjudged the size, Customer Service came in clutch

The XS size is teeeeeny, not great for any vaginal play.
However, the quality is fantastic, and the Soft firmness feels soft enough to not be completely squashed while still providing pressure/stimulation. The texture is INTERESTING! I can see the appeal, but at a smaller scale, it's a little too rough for me, especially at the tip where the suckers are smaller and more concentrated.

Definitely recommend reaaaally visualizing the size yourself with a can, or try to find something of similar dimensions.

The customer service was brilliant, I contacted UC about returning it, and because I live in Spain they offered to just charge me the to ship the bigger size that I wanted without the need to return the original, which was very, very kind. The mistake was mine and the company was very understanding about it.

I haven't had the time to really try it out, but it arrived safely and looks great! Has a nice heft to it, too. This is a medium, for reference

This toy went through hell and back to get delivered to my house. There were issues shipping it and the box came damaged but throughout it all the customer service was peak. The kind people here emailed me personally to explain the issue and then offered compensation. As for the toy itself it has a great design and even the small one is quite large personally speaking. My issue with this toy personally is that I think the base is too small which makes it hard to hold onto, as well as I was disappointed with the fade of mine. I chose mine in king fisher and 'denim' which no longer exists on this website so I have no idea if the color is accurate. I was sad to see that the majority of the toy is one color leaving only a little of the king fisher at the top. It's rather sad because the colors are gorgeous I just would have liked to see more of an even fade. Overall the products from this company are still top-notch and designed well I think my only issue is still with the colors and how they pour their silicone.

Phenomenal Products Paired with Unmatched Customer Service

The products speak for themselves—the craftsmanship and creativity are exceptional.

What truly stands out and compels me to share my experience, however, is the outstanding customer service I received from Jade. She was not only professional and patient, she also went above and beyond, ensuring that my needs were not just met but exceeded. Encountering such dedicated service and unwavering patience is rare.

Thank you, Jade, for turning what could have been a complicated experience into a remarkably positive one!

High quality and super pretty

This is the first toy I've gotten from UC, and I can't wait to get more. It's beautiful and poured in very high quality silicon, and customer service was great.