Features: 1. 3 Speed Temperature Indicator Light: Red 60, white 50, blue 45, to choose between by simply pressing the power button. 2. Keep Your Feet Warm: Heated socks can keep feet comfortable and warm in cold weather or extreme operating temperatures. One size for most people. 3. Soft And Breathable: Electric Thermal Socks are made of premium modal cotton, soft, breathable, and elastic, which is skin-friendly, keeping your feet warm and cozy. Better than wool socks, doesn't itch like wool, and is warmer. 4. Safety To Use: The heating elements of the battery-heated socks are made of insulating material, no worries about heating safety. Comfortable heating temperature lets your feet no longer be cold and stiff in the cold winter. 5. Necessary for Winter: With the electric heating socks, you can enjoy your fishing, camping, snowboarding, hunting, hiking, skiing, snowboarding, outdoor work, etc. The winter foot warmer socks are a considerate gift for your parents, friends, and family. Specification: Material: Modal Cotton Product Color: Black, Grey Package Size: 20 x 13 x 7cm Package Weight: 525g Package Included: 1 Pair x Heated Socks 1 Pair x 4000mAh battery 1 x Remote Control