2011 latest Hollow Silicone Bracelet: 1,100% silicone,food-grade material. 2,Independent R&D competence. 2011 New Design Hollow Silicone Bracelet:1,100% silicone,food-grade material.2,Independent R&D competence. Product description:100% silicone hollow silicone bracelet 1, material:100% silicone (food-grade, safe environmental protection)2, perimeter:150-200mm+3, width:20-35mm4, thickness:2mm5, ...