There are so many different sports and workouts, but it is not all convenient for you to put fitbit watch 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 newly developed elastic band is using as simply as like watch band, it's soft, elastic and lightweight, idea for anyone who want to wear smartwatch on the arm or ankle instead of on the wrist, it keeps your watch view-able and controllable as well, giving you an different alternate way to wear your watch!