Archer Watch Straps' Seat Belt Weaved Nylon Apple Watch straps are comfortable, durable, and waterproof. Each one comes with its own Apple Watch adapters installed, so you can swap them out quickly and easily. Wear them to the gym, the office, or anywhere else you want to take them. Made from two layers of durable, 1.2mm thick, seat belt weaved nylon, with rugged stitching and heavy duty polished stainless steel hardware, these straps offer the durability of a 2-layer nylon strap, with the uncompromising comfort of a seat belt NATO strap. Waterproof and washable, the straps fit wrists approximately 5.25" to 8" in circumference, depending on which size Apple Watch you have, which comfortably fits most people, and we offer a money back guarantee if you do have any fit issues.