Apple Nike - Strap for smart watch - 45 mm - 145-220 mm - midnight navy. Breathable and lightweight, the Nike Sport Loop is designed for fitness. It's made from a soft nylon weave featuring the iconic Nike swoosh. 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.