6 Special Features 1. Training ,let the corpus cavernosum blood circulation than before2. As Hard As your bicep after workout! 3.Delay the time of Ejcluation 4.Hot and Cold water exchange to feeling better stimulation 5.Extra Inner makes everything thighs and fell real 6.Silent Modes , Wont make too much noiseBrand : OMYSKY Model :Tornado Pump Masturbate Washing Warming Training Penis Material : ABS / TPE Colour : Black / GOLD Product Weight : 397G Size : 72 * 72 * 275 MMInner : YES , Needed to purchase separately,Not Comes with Machine Waterproof : Do not sink at bottom side Features: Delay Training / Washing / Promote blood circulationRecommendations : Adult Male who trying to train harder