a) You will feel more comfortable using the Massager for the cover head being made of pure silicic rubber. b) You may choose the speed as you like because of the massager being designed in strong and mild massaging. c) Double head massager will make you relax and enjoy massaging via 3000rpm. d) You may massage any parts of your body as you like for the super long wave handle which being designed according to human body engineering. e) While massaging, the two heads will work separately fitting to the effect of human massaging. f) Massager, light and easy to carry, will make you feel easier to massage by holding the handle and let it massage itself to achieve the perfect effects without pressing it.