This sock with its advanced zonal padding system offers enhance support and comfort for long days on your feet, excellent for multiday expeditions. With padding, balanced insulation, moisture wicking abilities and durability this sock contains all the technology needed for a challenging hike. Non slip so you can focus on the task at hand and not have to worrying about your sock bunching up in your footwear.26% New Wool18% Merino Wool38% Nylon/polyamide17% Endurofil/ polypropylene1% LYCRA/elastane_