Copper Trailblazer Sock (Silver)

Alpaca and Cotton with Copper and Silver ion technology. Experience the best of nature and technology:-Warm luxurious softness of Alpaca-Easy care and breathability of Cotton- Performance enhanced with an innovative moisture-wicking fiber made from recycled PET plastic bottles. It's engineered with an all-natural, built in copper and silver based ion additive that creates a safe, permanent anti-microbial barrier to help fight odor.- Undyed fiber is used when possible. 42% Alpaca20% Cotton20% Recycled PET Polyester17% Nylon1% SpandexSize Large fits:Women's Shoe: 9.5-12Men's Shoe: 9-12Size Extra Large fits:Men's shoe: 13 - 16