The Knot Dildo

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.

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.

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.

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.

We offer the following firmness options:

Medium Firmness - 10A 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.

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.

Check out our colour guide to see exactly what our colours look like. But please keep in mind, each toy is hand-poured, so no two are exactly alike!