The ultra-thin, lightweight Trail Loop is made from a nylon weave creating a soft strap with increased elasticity for a comfortable fit. The strap is infinitely adjustable with a convenient pull tab for quick adjustments on the go. This strap is carbon neutral. The Trail Loop contains 32% recycled content by weight, 100% of manufacturing electricity is covered by clean energy, and 50% or more of all carbon-neutral Apple Watch products are shipped without aeroplanes. Features Compatible with : Apple Watch Ultra/Ultra 2 Size : 49mm Fits Wrist : 145-220mm