describe:1. Heart rate monitor replacement soft strap is suitable for Polar H7 H9 H10, etc. / suitable for Garmin Dual.2. Compatible with Wahoo Tickr Garmin HRM Coospo Powr Labs FITCENT LIVLOV XOSS Manege Moofit, etc.3. Upgrade the shoulder strap and use a new buckle, which is more comfortable and convenient.4. Material: silicone + fiber. The fabric chest strap is comfortable, lightweight and adjustable in length to fit your size.5.This chest strap comes in sizes from M to XXL, making it suitable for people of all shapes and sizes. You can wear it while rowing, biking, hiking, yoga, running, indoor or outdoor training.Specification:Material: SiliconeItem package dimensions L x W x H: 6.46 x 1.46 x 1.06 inchesPackage includes:1 x replaceable heart rate strap