Thorlos Unisex TF Hunting Thick Padded Over the Calf Sock, Grey, Large 51% Exclusive THORLON acrylic, 33% Thermolite, 15% cotton, 1% spandex. Made in US No Closure closure Turn Inside Out-Machine Wash-Use Liquid Fabric Softner Padding Level: Moderate Cushion Key Benefit: Maximum 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 arch for a better fit, more support and less pressure on the feet for a more comfort, and cushioning around toes for extra protection Unique padding specifically engineered for hunting Low profile toe seam wont rub or irritate feet Fiber Contents: 51% Exclusive THORLON acrylic, 33% Thermolite, 15% Correspun cotton, 1% spandex