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These are mid-calf socks with a carbon fiber heating element running along the sole, wired to a rechargeable 3000mAh battery pack on each sock. An inline button switches between three heat levels, so you can dial warmth up on a cold commute and down indoors. The polyester-cotton blend wicks moisture and breathes, and the mid-calf height is cut to sit inside boots without bunching. They suit skiers, outdoor workers and commuters who get cold feet; against plain thermal socks they add active heat, but you carry a battery pack and cable on each leg.
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Rated 4.9 out of 5 from 30 ratings, buyers are largely satisfied. They report warm feet through cold outdoor use and like the three heat settings. The main grumbles are the bulk of the battery packs and the need to recharge them.
These heated mid calf socks have a carbon fiber heating element along the sole of each sock. The element connects through an attached cable to a rechargeable battery pack. It warms the bottom of the foot and spreads heat evenly across the sole area.
An inline button switches between three heat levels: high, medium and low. High is for temperatures well below freezing. Medium balances warmth with battery life. Low gives gentler warmth that runs longer.
Each sock runs on its own 3000mAh battery pack. The packs charge through USB and DC dual ports. The socks are made of a polyester cotton blend that wicks moisture and lets air move through. The elastic knit stretches around the lower leg, and its pattern grips the inside of the boot so the socks stay in place. The slim build fits inside hiking, snow and work boots.
