This Strapless Strap-on has 9 vibration settings and is suitable for couples who may wish to switch roles in the bedroom. The short part is inserted into the vagina. It is held in place by tensing the muscles. The long part can be inserted into either the anus or the vagina. The strap-on is 100% waterproof and can be charged via a USB cable. It can be cleaned after use with toy cleaner and lukewarm water.