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2026 New Hot Water Bag, made of food-grade silicone, explosion-proof and leak-proof, with safety certifications. heats up in 3 seconds, maintains constant temperature for 12 hours, eliminating the cold. Portable charging, intelligent temperature control, warming hands and bedding. Quality guaranteed by Tmall flagship store, a trusted choice for thousands of families. Warm up the entire winter, making love more considerate.