Size Chart The last thing you should be thinking about is the mesh ventilation zone or the toe seam in your Outdoor Sport socks. And because these details are there, you can concentrate on the scenery rather than blisters. Features: - 4 Degree? Elite Fit SystemUses two elastics for greater stretch and recovery to keep the sock in place - Minimal cushioning for maximum next-to-foot performance without added bulk - Reinforced heel and toe for durability - Flat knit toe seam - Achilles tab - Sock Height: Micro - Knit in USA of Imported Yarn: 61% Merino Wool, 38% Nylon, 1% Elastane - Last Chance: Discontinued Style - Only available to ship within the USA