They look very innocent, but they are not! Each one has a suction cavity to suck into your downstairs bits and let you jerk off with it. How fun! Red #1 and the Trans Pride Flag rose both have textured interiors, like a fleshlight, for this who want a little grinding, or might have some length for penetration, while Red #2 and the Signature color (the lovely translucent pink and green default I am now casting toys in!) have plain cavities ment for people with short clits, or who just want max suction.