Feetures original sock design with an extra level of comfort Features power bands of Lycra that hug the foot evenly for comfort and support This snug, supportive fit eliminates movement to prevent blisters high density cushioning to provide extra protection in high impact areas of the foot iWick fibers wick moisture to keep feet cool and dry. Mesh construction on top of the sock provides ventilation for added breathe-ability. Y-heel construction keeps the sock from sliding into the shoe The Perfect Toe (No irritating toe seam). Classic crew length hits just below the calf SPECIFICATIONS: Length: Crew Weight: Medium Material: 72% iWick (Polyester), 25% Nylon, 3% Lycra (Spandex)