Works on both arm and ankle, fits arm up to 15 inches (38cm), works with all versions of Apple Watch. The 41mm bands work with 38mm and 40mm cases; the 45mm bands work with 42mm and 44mm cases.

Soft, breathable, and lightweight, the band provides soft cushioning while allowing moisture to escape.

The stretchy material adapts to your every movement and helps maintain a secure, comfortable fit throughout the day.

Easy to use, both ends of the band feature a hook-and-loop design closure for easy wearing and adjustment, ensuring accurate collection of training data.