quality. Anti-skid design back of the strap，About : Adjustable Head StrapUsed for attaching your Gopro camera to helmet or head.Anti-skid design.Elastic nylon strap， polycarbonate buckles， durable and adjustable.Compatibility: For Gopro Hero 1/2/3/3+/4/5，Sj4000/ Sj5000 /Sj6000 /Sj7000/ Xiaomi YiColor: BlackWeight 50gMaterial: Nylon + PCPackage List: 1 * Head Strap