... rubber 2 .Soft, non-toxic , 3 .SGS pass 4. Short production cycle White UV-resistance Custom Silicone Rings with medical grade silicone ... same as your design, drawing or sample.2. Color: Black, white, Transparent, gray, green, yellow, blue, red etc.3, Logo & ... 10000PCS.8. Package: Standard export packing: PVC bag, Carton, Pallet White UV-resistance Custom Silicone Rings with medical grade silicone