BambooMN Men's Rayon from Bamboo Fiber Stripe Socks Choose from a 3 pair or 6 pair value pack Content: 85% Rayon from Bamboo, 10% Nylon, 5% Elastane Rayon from bamboo fiber is a natural and renewable resource that has great anti-microbial and wicking abilities The lightweight construction of bamboo fiber socks allows them to keep you cool in the heat yet warm in the cold