Features:-With two 3.7V/4000mAh rechargeable batteries, it can keep you warm and comfortable all day long.-Made of high quality cotton and spandex, it is elastic, breathable, soft and comfortable.-It can be hand washed and machine washed (gentle mode), and can be used again after washing and drying (remove the batteries before washing).-There are three temperature settings, high (red), medium (orange), and low (green).-Perfect for all kinds of outdoor sports, especially suitable for rock climbing, hiking, motorcycling, skiing, skating and so on.Specification:Three-speed temperature adjustment: 45-55-65 degreesColour: gray&blackSize: 38-46Material: cotton+spandexVoltage: 3.7VBattery capacity: 4000mAhCharging time: 5-6hUse time: 4-12h Package Included.
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