The rugged Alpine Loop is made from two textile layers woven together into one continuous piece without stitching. High-strength yarns reinforce the top loops, and the corrosion-resistant titanium G-hook slides easily into the loops for secure fit. This band is carbon neutral. The Alpine Loop contains 43% 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 airplanes.º Apple Watch Alpine Loop Material: Titanium, 100% recycled polyester, 100% recycled spandex