Silicone material, soft and hard, no stimulation reaction to the human body, safe to use. Innovative suction cup, easily adsorbed on the glass, office, door, for neck, back, waist and other parts of the massage. Adsorption design, massage without begging, easy to enjoy anytime, anywhere. Silicone full body wash, wash and clean after use, wipe dry to continue to use, easy to take care of. Small and portable, one hand grasp, instant massage. Can be laser engraved logo on the bottom, customise your own brand.