Extra warm ski socks for men, UYN Ski Magma Socks combine the natural warmth of merino wool with Argenthon and Natex, a 100% plant-based nylon fibre that provides ideal climate management. Argenthon contains silver ions which can absorb and reflect heat, stopping it from dissipating too quickly. Argenthon also lends the socks its bacteriostatic abilities for healthier, fresher skin. Air circulation is handled by a 3D micro-channel structure throughout the knit. The sock is anatomically designed, from a comfortable shaped cuff to left/right specific ‘Ergologic’ fit feet. Protection can be found at all points; shin, calf, Achilles tendon, instep and toes to cushion against shock and includes compression bandaging at the ankles. Even the soles have an intelligent ‘Gripdynamic’ system to create greater stability inside your boots, and all for your total skiing pleasure.