Ultra-comfortable and breathable. The Woven Nylon Sport Loop Band is constructed from Dual-layer woven nylon, comprising of dense loops that rest against the skin to offer an ultra-comfortable fit while helping to prevent moisture from being absorbed into the strap. Featuring a hook-and-loop fastening system to allow for fast and simple adjustment, the Woven Nylon Band is the ultimate, high-performance strap. Compatible with all Apple Watch versions (Series 1, 2, 3, 4, 5, 6, 7 & SE).