Description When Nature Calls. Go Wild. In Collaboration With National Parks, Crew Features Targeted Cushioning, Arch Support, A Seamless Toe Closure, And An Embroidered Yosemite Flag. Features Crew Height Cotton Blend Medium Cushioning Targeted Cushioning Arch Support Seamless Toe Closure Fit and Fabric 76% combed cotton, 17% polyester, 4% nylon, 3% elastane