Serious skiers and snowboarders, these FITS Pro Ski socks are legit game-changers for your time on the slopes. Made with superfine Merino wool (57% wool, 32% nylon, 8% polyester, 3% Lycra), these over-the-calf socks naturally manage moisture and regulate temperature so your feet stay comfortable all day long. The patented heel lock is brilliant - it seriously reduces blister risk when combined with properly fitted boots. There's extra cushioning in the shin area and heel for comfort and warmth, plus gradient compression throughout the leg that stimulates blood flow and keeps your legs feeling fresh. The full-contact welt means no sagging or bunching, and the vented foot top adds breathability. These are medium-weight socks designed to fill empty space in packed-out boots, giving you that perfect fit without being too bulky. Whether you're carving groomers or exploring the backcountry, these socks provide the support and comfort you need for those long days in winter sports. FITS really knows their stuff when it comes to sock technology - your feet will thank you!