Made from a custom-developed, high-performance fluoroelastomer, the Sport Band is durable and strong, yet surprisingly soft. The smooth, dense material drapes elegantly across your wrist and feels comfortable next to your skin. An innovative pin-and-tuck closure ensures a clean fit. Band Size Regular: Band fits 130- to 200-millimetre wrists Tech Specs Material: Fluoroelastomer Compatibility You can match most bands with any Apple Watch Series 3 or newer case of the same size. The 41-mm bands work with 38-mm and 40-mm cases; the 45-mm bands work with 42-mm, 44-mm and 49-mm cases. Apple Watch Models - Apple Watch Ultra - Apple Watch Series 8 - Apple Watch Series 7 - Apple Watch Series 6 - Apple Watch SE - Apple Watch Series 5 - Apple Watch Series 4 - Apple Watch Series 3 - Apple Watch Series 2 - Apple Watch Series 1 - Apple Watch (1st generation)