ACBEE Silicone Band Fitbit Alta,A variety of styles. 1.Specially designed for Fitbit Alta,Perfect fit.(Not fit any other watch) 2.Medium hard and soft material,Soft and durable,Avoid hurt wrist in sports. 3.EASY TO INSTALL.No need any tool installation,Joints without any gap. 4..ADJUSTABLE SECURE WRISTBAND DESIGN - One size fits most wrists size. Designed to fit most wrists (5"- 8"). 5.Choose your favorite pattern, Make your fitbit unique,More occasions,more dress,More choice.