Nylon Blend: 74% nylon, 18% polyester, 5% combed cotton, 3% elastane. Infiknit™ Lifetime Guarantee: Our Infiknit™ technology never rips, never tears. Made for good. But if you’re turbo-gnarly and rip one, we got you. Crew: A classic sock height that hits the mid-point of your lower leg. Medium Cushioning: Moderate cushioning throughout the sock for a secure fit with enhanced impact protection.