Step into a warmer winter with the KOMBI Warm It Up Heating Ski Socks. Equipped with the KOMBI WARM-UP SYSTEM, these heated socks feature adjustable warmth powered by a USB battery pack that lasts up to 8 hours. They include additional arch and ankle support, heel and toe reinforcement for durability, and an over-the-calf length for maximum coverage. With midweight cushioning for maximum comfort and fabric combining acrylic, merino wool, and nylon, these ski socks deliver the perfect blend of warmth, breathability, and stretch. Backed by a 2-year warranty, you can follow where the season leads you with peace of mind: ski touring, cross-country skiing, snowboarding, and any activity requiring consistent comfort.