You can't go wrong with this one. It's pretty heavy so it'll stay in place real easy while you do your thing. Both channels feel great and unique. The material feels really nice and it can stretch easily to accommodate anyone who is bigger than 6" like me once you're inside. Just buy it, it's one of the best!
I absolutely love this material! It is so soft that you have to grab its buttocks, but it is strong enough to increase resistance during use. It is very, very easy to clean, just use it under water to clean and keep it clean. It has good suction power. Each hole has a different texture for you to enjoy. Its material is quite flexible and can be used wherever you like.