1) Silicone rubber umbrella grip case is made of 100% silicone or rubber 2) slip proof 3)Pass SGS,LFGB,CE approve. Silicone Rubber Umbrella Grip Case,umbrella grip cover,umbrella rubber case,silicone umbrella cover1) it is made of 100% silicone or rubber 2) slip proof ,it is good to used on umbralla.3) nontoxic for body. This design is just for your reference. Highly welcome your design.