Thrust n' Grind Thrusting and Vibrating Silicone Sex GrinderTransform Every Chair with Thrusting Ecstasy! Transform any chair into your own personal sex saddle with this thrusting and vibrating grinder pad! Simply lay it down on a flat surface, turn it on, and enjoy 4 speeds and 7 patterns of thrusting and vibration from the round headed shaft! Behind the shaft is a small, ribbed mound for backdoor stimulation. Rub against it as you grind to get even more turned on! Control all the settings via a rechargeable,