The UltraFit nylon straps are lightweight, soft and comfortable to wear. They're made with an elastic dual-layer antimicrobial nylon weave that allows moisture to escape. The strap design loops around the pins and is secured via two sets of hook and loop fasteners at both ends of the strap, providing easier adjustability and a secure fit for a variety of wrist sizes. UltraFit nylon straps offer trusted performance and superior durability.Compatible Devices:- D2™ Bravo- D2™ Charlie- D2™ Delta PX- Descent™ Mk1- Descent™ Mk2- Descent™ Mk2i- Enduro™- Enduro™ 2- epix™ Pro (Gen 2) – Sapphire Edition 51 mm- Fēnix® 3- Fēnix® 3 Sapphire - Fēnix® 3 Sapphire HR- Fēnix® 5X- Fēnix® 5X Plus- Fēnix 6X - Pro and Sapphire editions- Fenix® 6X - Pro Solar Edition- Fēnix® 7X – Sapphire Solar Edition- Fēnix® 7X – Solar Edition- Fēnix® 7X Pro – Sapphire Solar Edition- Fēnix® 7X Pro – Solar Edition- Foretrex® 601- Foretrex® 701 Ballistic Edition- Foretrex® 801- Foretrex® 901 Ballistic Edition- Instinct® 2X Solar- Instinct® 2X Solar - Tactical Edition- Quatix® 3- Quatix® 6X Solar- Quatix® 7X – Solar Edition- Tactix® 7 - AMOLED Edition- Tactix® 7 – Pro Ballistics Edition- Tactix® 7 – Pro Edition- Tactix® 7 – Standard Edition- Tactix® Bravo- Tactix® Charlie- Tactix® Delta - Sapphire Edition- Tactix® Delta - Solar Edition- Tactix® Delta - Solar Edition with Ballistics