Mr. Sensation is made from pretty firm silicone, which is great for strap-on use. Once you've warmed up a bit, the ridges are quite tantalizing! As someone who ordinarily finds ridges to be too blunt, this one works lovely since it spirals along the toy. The suction cup is super efficient for sticking, yet super quick to remove when you actively try to (so suddenly having company at your door isn't the end of the world). This is a very versatile toy, especially considering the modest price when on sale! I love using it in the shower - a great incentive for thigh-toning squat exercises in solo-play with the suction cup, or in penetrating a partner using a strapon harness.