Patagonia Women's Peak Sneak A/C-W 100% Mesh, Embossed Suede Imported Rubber sole Air mesh upper reinforced with embossed suede in heel Resilient leather toe bumper provides added durability and protection. 50% recycled mesh footbed and lining for breathability Patagonia Air Cushion provides shock absorption 3mm nylon 6.6 injection molded arch shank provides support under the arch and a natural flex at the fall of the foot