If your feet run hot or you have been looking for the perfect exercise sock -- look no further. The Allrounder Tech-Mesh sock looks like a normal sock when you have shoes on, but the entire foot is made in proprietary Tech-Mesh, keeping your feet cool and dry on even the hottest days. Details and Care: Made in Nara Prefecture, Japan Machine wash. Dry flat. Avoid tumble drying to prevent damage and prolong life of the garment. 69% Polyester/ 28% Nylon / 3% Polyurethane Detail photos show the Allrounder Tech-Mesh sock in a different colorway. They are used to show the difference in knit between the foot and top of the sock. Measurements and Fit: Comfortably fits US 8-12 About Rototo: Rototo was started with the motto of making the everyday special, step by step. They focus on perfecting more mundane products like socks, knit hats, and scarves, elevating them to a level where they are something that stops being overlooked and are instead appreciated. All of their products are made in Nara Prefecture, Japan, which has had a prominent textile industry since the 17th century, and started making socks in 1910.