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Hengfa Lina. Graphene heats up, three levels of intelligent temperature control 6555 45, bringing you thoughtful warmth and care during special times. Hand warming and waist warming 2-in-1, warm your hands and waist anytime and anywhere, keeping you as warm as spring even in the cold winter. This warm belt is made of crystal velvet, which is soft and skin-friendly, comfortable to touch, has good thermal insulation properties, is washable and easy to clean. The lightweight and portable warming belt is suitable for many occasions, such as offices, high-speed trains, cars, study rooms, living rooms, hotels, etc. Features: 1. Graphene heats up, three levels of intelligent temperature control 6555 45, bringing you thoughtful warmth and care during special times. 2. Hand warming and waist warming 2-in-1, warm your hands and waist anytime and anywhere, keeping you as warm as spring even in the cold winter. 3. This warm belt is made of crystal velvet, which is soft and skin-friendly, comfortab