Thorlos Unisex AMX Fitness Thick Padded Slouch Sock 72% Exclusive THORLON acrylic, 23% nylon, 5% spandex Turn Inside Out-Machine Wash-Use Liquid Fabric Softner Padding Level: Moderate Cushion Key Benefit: Thorlos Protection = Maximum Comfort Guarantee - Your feet will feel better or your money back! Women's specific design includes extra stretch yarn in the ankle and arch, a smaller heel pocket and a smaller custom toe box for a superior fit "Slouch" upper is a classic look some prefer for it's fit, fashion and/or warmththey do go up to the knee if you prefer Thorlos clinically-tested padding under the ball and heel provides maximum protection from friction, the primary cause of blisters, and impact protection where needed most Padding clinically-tested and shown to reduce foot pain, blisters, moisture and pressures Constructed with THORLON fibers for superior softness, resilience, durability and moisture-wicking for drier, better feeling feet Flat knit instep and cushioning in arch for better fit, more support and less pressure on the feet for a more comfortable workout Low profile toe seam wont rub or irritate your foot