MDW 21 PCS  Silicon Fastener Secure Ring Specially for Fitbit Charge Assorted Color made from stretchable and comfortable silicon material, protect your skin from the metal clasp and secure the band in style peace of mind with one or two pcs MDW silicon fastener ring colorful,make your loved one hr looks fun specially for fitbit charge and for fitbit charge hr , not for other models includes only the fasteners, no include the band, tracker or any other stuff including 21 pcs quality silicon fastener ring that custom fit for fitbit charge and fitbit charge hr