Hiking with Foot Warmers - Dr. Warm thick heated socks are made from high-quality AC cotton, offering high elasticity and are seamless to keep your feet more comfortable. These rechargeable, electrically heated socks come with two rechargeable 3.7V lithium-ion batteries that keep your feet warm all day long.

The 7.4V 2600mAh rechargeable lithium-ion batteries are available in sizes S, M, L, and XL, with the sock length being longer than other models. The electric socks include a pair of rechargeable 7.4V 2600mAh lithium-polymer batteries that provide heating durations of 3.5 to 11 hours. A full charge takes about 3 to 4 hours. Additionally, they are equipped with 3 heating controllers for easy temperature adjustment.

Multifunctional - These unisex rechargeable heated socks are made from high-quality cotton, elastane, and nylon. They are breathable, quick-drying, elastic, and ultra-soft, making them ideal for a variety of outdoor sports, especially suitable for skiing, climbing, cycling, walking, snowboarding, and hunting.

Adjustable Temperature - The electrically heated socks feature 3 temperature settings: high, medium, and low. The heating area on the front and underside of the instep heats up quickly and reaches the desired temperature in about 1 minute.