The Apple Watch Sport Loop band was woven from nylon thread to create a hook-and-loop closure. These bands were available for the 41 mm and 45 mm Apple Watch models, and were offered in sizes to fit 130–200 mm wrists (41 mm) and 145–220 mm wrists (45 mm). The bands also fit older Apple Watch sizes.
This (PRODUCT)RED band used a two-tone design first introduced on Fall 2021. One stripe was dark red and the other was a bright red with edges in a shade of orange (dark cantelope). The connector and closure plastics were dark red.
Apple described the Apple Watch Sport Loop band:
“Soft, breathable, and lightweight, the Sport Loop features a hook-and-loop fastener for quick and easy adjustment. The double-layer nylon weave has dense loops on the skin side that provide soft cushioning while allowing moisture to escape. On the reverse side, the attachment loops are securely anchored for superior durability.”
The packaging specified that “Apple is proud to join (RED) in funding programs to help in the fight against HIV/AIDS.”