The New Wrightsock Merino Coolmesh Quarter 3 Pack (Grey/Blue) Quarter Length Socks Shoes, unisex, Shoes , Socks , Quarter Length, SM (Women's Shoe 4-6), true, A true performance sock from Wrightsock. The Merino Coolmesh Quarter delivers all the insulation and comfort of Merino wool while staying lightweight and breathable. Great for hiking and trail running. A lighter wool sock with double-layer construction for added protection. Dri-WRIGHT II fibers help keep your feet fresh. Inner and outer layers interact to help prevent friction and help reduce blisters. Space between the layers provides insulation from the heat and cold. Stabilizer Zone enhances the fit around the arch to prevent slipping during use. Y-heel design and flat knit seams provide excellent comfort and overall fit. Quarter style sock. Materials: •Inner layer: 70% Dri-WRIGHT II polyester 26% nylon 4% spandex. •Outer layer: 71% Merino wool 24% nylon 5% spandex. Machine wash cold and dry flat. Sold in a three-pair pack. Made in the U.S.A.