Soft, breathable, and lightweight, the Nike Sport Loop is designed for fitness, with select colors matched to the new line of Nike running shoes. It features a nylon weave with reflective thread designed to shimmer when light strikes it. A hook-and-loop fastener makes for quick and easy adjustment, and dense loops on the skin side provide soft cushioning while allowing moisture to escape. On the reverse side, the attachment loops are securely anchored for superior durability. Model Compatibility Apple Watch Series 6, Apple Watch Series 3, Apple Watch SE, Apple Watch Series 4, Apple Watch Series 5