Having used similar toys that rotate, I thought to give this a try. I immediately cut a very small hole in the top, which aids in cleaning and drying thoroughly. The hole also allows for a view of the fireworks, if interested. I liked it so much, I bought more for friends. Each also described it as having a subtle interior and one liked the idea of cutting a vent hole in the top. Unlike other toys that have smooth and uniform exteriors, this is easy to hold onto should lube get on your hand. These accommodate differences in girth - just squeeze more tightly as needed. It’s flexible enough to accommodate others who possess significant girth. I am not a spokesperson for the company and received no incentive. When two friends and I had similar comments and enjoyment levels, even with our anatomical differences, I can’t help but recommend both the product and cutting a little hole in the top for the benefits mentioned. Placing a fingertip over the hole restores suction, if desired.