Thorlos Unisex WMM Walking Thick Padded Low Cut Sock 70% THORLON acrylic, 26% stretch nylon, 4% elastic Made in USA 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! Proudly MADE in the USA | North Carolina 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 Constructed with THORLON fibers for superior softness, resilience, durability, and moisture-wicking for drier, better feeling feet Cushioned instep and spandex in the arch for a better fit, more support and less pressure on the foot for more comfort while walking Low profile toe seam won't rub or irritate the foot Ventilation panel for extra moisture control and breathability Fiber Contents: 80% Exclusive THORLON Acrylic , 15% Stretch nylon , 5% Spandex