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50% acrylic, 46% merino wool and 4% spandex
Battery life up to 9 hours of heat
Each sock comes with a switch with 3 different heat settings, allowing a personalized level of comfort
Each sock is powered by a 3.7-volt rechargeable lithium ion battery which has 3,000 milliampere-hours of power
Rechargeable batteries (2) and charger cable included
Sizes: S/M (fits shoe sizes : 5 to 9.5 men, 6 to 10.5 women), L/XL (fits shoe sizes : 10 to 13 men, 11 women)
The Energy Techwear K-1055 heated socks feature merino wool and are designed to protect you from cold weather. They are perfect for winter sports and outdoor activities such as winter hiking and alpine skiing. Each sock comes with a switch with 3 different heat settings, allowing a personalized level of warmth. The heated socks are powered by 2 rechargeable batteries that can provide up to 9 hours of heat, which comes quite handy if you are one of those people whose toes are particularly sensitive to the cold.