Compatible with apple watch Series 3 2 1 (42mm), apple watch series 6 SE 5 4 (44mm), apple watch series 8 7 (45mm) or apple watch ultra (49mm) Easy to remove and install. Lightweight and super cute Handmade, elasitc woven fabrics, good elasticity and doesn't emit any odor One size but adjustable, strap fits 8.0 to 17.0 inches ankle/forearm/upper arm, suits for most of adults Package include one piece elastic strap only, not include other parts There are so many different sports and workouts, but it is not all convenient for you to put smartwatch on your wrist, for example, kick-boxing is a great high-energy workout but the gloves completely cover your wrist. In this case, if you don't like taking off your watch and missing the training data, you can consider to put it on your upper arm, forearm or ankle instead of your wrist. Our elastic band is working perfectly with your smartwatch and idea for anyone who want to find a new way to wear smartwatch. It is soft, stretchy, comfortable and lightweight, giving you an different alternate way to wear your smartwatch, you use it simply just liking a watch band and will love to wear it all day!