Thorlos Unisex WX Walking Thick Padded Crew Sock 80% THORLON acrylic, 14% stretch nylon, 6% elastic Made in USA No Closure closure Turn Inside Out-Machine Wash-Use Liquid Fabric Softner 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 Unique padding specifically designed for walking, clinically show to reduce blisters, pain, pressures, and moisture Low profile toe seam wont rub or irritate the foot Fiber Contents: 83% Exclusive THORLON Acrylic, 12% Stretch nylon, 5% Spandex