Features: 3-speed intelligent digital display temperature control, constant-temperature heating Double-sided heating design, larger heating surface, better heat increase effect Down cotton waterproof fabric, soft and skin-friendly, better warmth Four protections to prevent overcharging and leakage On cold winter days, do you often feel that your hands are cold and need warmth urgently, Portable Graphene Down Hand Warmer Bag is the perfect companion for you Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Power Banks Capacity: 5000mah/10000mah Material: Polyester Accessories: With extension cord Package List: 1x Hand Warmer Pouch