All year round sock for outdoor enthusiast. Designed to ensure dry, warm and comfortable feet. Originally named the Trekker, this sock changed the expectations of a hiking sock forever. Engineered advanced zonal padding system for support and comfort this is the ultimate sock for long or multiday expeditions. Merino Performance Fusion Technology provides resilient padding, balanced insulation, moisture wicking and outstanding durability for all day comfort. The Performance Fit is close and supportive and won´t slip down or bunch in your footwear. The Flat Toe Seam minimises bulk that could cause irritation in the toe box and the sock is kept securely in place with an Elasticated Arch and 3D-shaped heel cup. Built on a structure of Lycra® and set by our Thermo Fit process ensures the sock returns to its original shape and size after every wash. Tested and loved by 1000´s of walkers, hikers and explorers the Trekker has been copied but never bettered.Features:- Performance Fit- Moisture Management- ThermoFit- Forward Flex- Flat toe seam- ShockZones- Y-HeelPerformance Fit:- Contoured knit ensuring the cuff of the sock does not move as it comfortably but closely fits the ankle or calf, depending on the model. They are made from slightly tougher yars and best suited for expeditions and Multi-day trekking.Midweight:- Midweight is a great, flexible weight of sock that provides ample cushioning and protection for all-day hiking and trekking.Specifications:- Material: 26% New Wool , 18% Merino Wool , 38% Nylon / polyamide , 17% Endurofil™/ polypropylene , 1% LYCRA® / elastane- Warmth Rating: 4/5- Cushioning Rating: 4/5