Feetures! Elite Light Cushion Crew Socks 100% Other Fibers Made in US Cotton/Nylon The Power Arch (Patent Pending) is anatomically constructed to provide targeted support where it's needed most. Anatomical right and left foot design enhances fit, delivering maximum protection by helping to eliminate blisters. iWick fibers wick moisture to keep feet dry and odor-free. The Perfect Toe (No irritating toe seam). Cotton/Nylon