Made from a custom 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. Regular 41mm: Band fits 130–200mm wrists. 45mm: Band fits 140–210mm wrists. You can match most bands with any Apple Watch Series 3 or newer case of the same size. The 41mm bands work with 38mm and 40mm cases; the 45mm bands work with 42mm and 44mm cases. Apple Watch Models 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