Product Description Designed to keep feet happy on the trail, REI Co-op COOLMAX EcoMade Light hiking crew socks wick sweat and breathe to help your feet keep their cool. REI Co-op COOLMAX EcoMade Lightweight Hiking Crew Socks Blue M at REI.com Browse all REI.com deals $17.95 In Stock at REI.com Price verified 2d ago Buy Now at REI.com Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Rei Co-Op Color Navy Size S Material Polyester / Polyester Blend Gender unisex MPN 21604 Rei Co-Op