●Compatible with all Suunto core models. ●Hook-and-Loop fastener: Quick and easy adjustment. ●Material: Woven Nylon. Fits 6.1"-8.2" wrists. ●This includes the strap, screwdrivers and adapter to attach the strap. ●No-hassle 6 Months Warranty. For any issue, just contact with us. We will reply within 24 hours.