"The value 2-pack for construction and heavy work Acrylic wicks moisture away and is soft against the foot Extra cushion over the toe area for steel toe protection Cushion sole for all day foot comfort Reinforced sole and heel for extended wear Smooth linear looped toe seam for no irritation at toes Crew Medium weight Contents: 77% acrylic, 22% nylon, 1% Lycra? spandex"