For Polar Vantage V2 Silicone Solid Color Sweat-proof Watch Band Replacement Watch Strap - Grey Made of premium silicone material, it is not harmful and not allergic to human skin The strap is thickened, which makes it more comfortable to wear and easier to use Waterproof, sweatproof, comfortable and soft An ideal strap replacement for your old, broken one Specifications: Material: silicone Wrist circumference: 5.5-8.7 inches Length: 90+140mm Width: 27mm Weight: 25g Compatible with: Polar Vantage V2 Package included: 1 x Watch Strap Other items not included