Feetures! - High Performance Ultra Light - No Show Tab - Athletic Running Socks for Men and Women 100% Other Fibers Made in US Thin flat knit construction takes up minimal room in the shoe. The Perfect Toe (No irritating toe seam.) Snug Fit Technology - Unique Power Bands of Lycra hug your entire foot for maximum support. This snug, supportive fit eliminates movement to prevent blisters. iWick fibers wick moisture to keep feet cool, dry and odor-free. 84% Polyester/13% Nylon/3% Lycra