Bracelets are made of silicone rubber, soft and safe, comfortable to wear, easy to take off and on. Waterproof, no need to be remove even when you are taking a shower. It will be a nice gift choice for family and friends. Used for parties, banquet, dinner, training, sports and events. Perfect for clubs and teams to show their enthusiasm and distinguish different teams. 8 17/64" L x 15/32" W