1. Strecthy nylon Charge 5 sports wristband is made of premium soft and breathable nylon material. Adjustable Buckle bands adjust length flexibly. 2. This stretch solo loop sports band compatible with Fitbit Charge 5 Advanced Fitness & Health Tracker made of high quality nylon. 3. Ajustable one size design could perfectly fit for most wrist size.Fit for 4.5" to 9.10"wrist. Easty to install and remove. 4.Buckle design, easy to put on, and fits securely on the watch.Simple and convenient, just slides right on. 5. There are many colors for you to choose. Replacing the strap instead of the watch keeps your watch looking like new all the time;