This penis trainer is made of safe and non-toxic silicone material, 3D realistic Channel, 3 powerful motors, you'll get best stimulation and massage. 10 vibrating modes, it will make you feel its power and become stronger and bigger. In addition, APP control, you can free your hands, train the penis easily, and it has multiple ways to play, so you can get more pleasure. Fully waterproof and easy to clean. Use this trainer for a long time and you will find that you become stronger and stronger.