Compatible:Compatible with Fitbit Ace 3 wrist band. Features: The watch band is made of highquality of silicone. It’s more comfortable,durable,and softer. Multiple fashionable patterns and colors for you to choose.The strap is suitable for unisex adults,women and men. The size can be adjusted according to the circumstance of individual wrist .The band suitable for wrist size 4.6inch7.1inch. and breathable,Sturdy and durable,wear very comfortable.Quick Release Bands, easy to install and remove, Not easy to fall off.