Smartwool PhD Outdoor Ultra Light Mini Socks - Men's: Whether it's a trail run at dawn or a hike in the heat of summer, this multi-sport sock features the power of Merino for maximum breathability, moisture management and temperature regulation. Made with Indestructawool(TM) technology for ultimate durability and the 4 DegreeA(R) elite fit system to keep the sock in place. The mini height offers the perfect balance of low profile and protection from debris. Features Virtually Seamless(TM) toe 3.75" overall height Sock Height: Mini Made in USA of Imported Yarn: 48% Merino Wool, 47% Nylon, 5% Elastane