SAVIOR HEAT Heated Socks - App Control, Merino Wool, Rechargeabl

Stay warm safely with smart safety features that automatically adjust to a medium level every 30 minutes to prevent hot spots. Enjoy steady warmth for skiing, snowboarding, hunting, winter work, hiking, biking, and more. Control via Bluetooth app for mode switching, setting timers (0-180 minutes), and checking battery levels. An on-sock switch offers backup control. Each pair includes 2 rechargeable 7.4V 2200mAh batteries for up to 12 hours of warmth. Features quick heat-up in 10 seconds and 3 heat levels (104°F / 122°F / 149°F). Made from premium Merino wool that traps heat, wicks sweat, and resists odor, keeping feet dry and cozy. Resists odor and fits smoothly under boots. Washable for easy care. Slim fit, made with Coolmax material, perfect for ski, work, and hiking boots. Available in Unisex sizes S, M, L, XL (US shoe sizes 5-14).