Description: Material: Silicone Process: This product is made of medical grade silica gel, which is waterproof, sweatproof, comfortable and soft. The strap adopts thick design, comfortable to wear, easy to use, high-quality choice. The material has no harm to human skin, is environmentally safe and non-allergenic. Specifications: Suitable for wrist circumference: 5.5-8.5 inches Product size: medium size (unisex) Applicable products: For Samsung Galaxy Fit 2 SM-R220 Package Included: 1 x Wrist strap (Not including watch) .