Step into sustainability with the Planting Trees Recycled Polyester Daily Socks from tentree. This 2-pack of daily crew socks from tentree is made from 3 recycled plastic water bottles sourced from REPREVE fabric. With a comfy ribbed opening and unique design, these socks are a step above the rest. Size S/M fits shoe sizes 4-9 and L/XL fits shoe sizes 9.5-14.