Premium Material: Chest Straps are made of hight quality nylon and non-slip textured PVC grip tab, which is easy and durable to use, compatible with most sizes. Quick Release Buckle: Each strap with quick release buckle and d-rings, it's easy to buckle and unbukle Adjustable: You can adjust it to your expected length. Extends up to approximately 14.6 inches in length. You will not feel too much pressure on your chest.