Cotton Blen: 73% combed cotton,16% polyester,8% nylon,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.