Designed to give your Apple Watch a modern and sleek athletic look for intense workouts and everyday wear. Sport Band has a lightweight and breathable design which is constructed from a soft, flexible FKM rubber for all-day comfort. A low-profile pin-and-tuck mechanism ensures a secure closure.FKM fluoroelastomer rubber100% waterproofInterior ventilation channelsCustom aluminum closure pinDesigned for Apple Watch Series 6, SE, Series 7/Series 8, and all previous versions of Apple Watch + Apple Watch Ultra