Apple's Sport Loop is made from woven nylon with a hook and loop fastener. A person side is actually a velcro-like product that adheres the Sport Loop tightly to your wrist. It will not use holes like the Sport Band, so you will get an much more customized suit By https://sethzytld.thenerdsblog.com/32257302/getting-my-apple-watch-band-size-in-inches-to-work