Feetures Men's Graduated Compression Knee High 79% Nylon, 13% Polyester, 8% Lycra Spandex Imported Machine Wash EXTREME COMFORT: Anatomical right and left foot design enhances fit, delivering maximum comfort and protection by helping to eliminate blisters. The seamless toe provides unsurpassed comfort. GRADUATED COMPRESSION: Graduated compression improves the circulation in the legs by encouraging blood flow back to the heart. PROMOTES RECOVERY: Feetures compression socks offer 15-20mmHg of compression at the ankle and gradually less compression as you move toward the knee that promotes faster recovery and reduced fatigue. ANTI-ODOR: iWick fibers wick moisture to keep feet dry and odor-free, perfect for any athlete. LIFETIME GUARANTEE: Feetures! stands behind the quality of their socks and wants you to have a great experience with every product they make. If at any point you are unsatisfied with one of their products, you may return it for a replacement or a refund.