【Large Hot Water Bottle & Fast Charging & Long-Lasting Warmth】Larger than commercially available hot water bottles, the increased surface area allows for efficient heat transfer and warming. This is ideal for cuddling against your stomach or placing on your lap. With fast charging, a mere 15-20 minutes of charging provides warmth for 4-12 hours! It maintains a gentle, comfortable warmth for approximately 4-7 hours at room temperature and 7-12 hours inside a futon. (Specific warming times may vary depending on the usage environment). You can sleep comfortably until morning if you put it in your futon before bed. 【Warm Rechargeable Hot Water Bottle & Gentle Touch & Pocket Design】No need to bother with refilling with hot water; this is a rechargeable, eco-friendly hot water bottle that can be used repeatedly. It gently warms your body without drying out your skin. The warming cover is made of a soft material with short, fine fibers, which minimizes shedding and provides a fluffy, smooth feel. It can be used without worry even by those with sensitive skin. By sandwiching polyester padding between the outer and inner fabrics, warm air is trapped within the padding, preventing heat from escaping and providing long-lasting comfort. Furthermore, there are pockets on both sides, so you can simply put your hands in and they will fit snugly and warm up. It gently warms your body with natural warmth, targeting areas like your hands and feet that are prone to coldness. The cover can be removed and washed in your home washing machine (using a laundry net) for hygienic use. 【High-Quality Safe Materials & Multiple Protection System & 70° Automatic Power Cut-Off】The hot water bottle uses high-quality insulation materials and a 6-layer high-strength explosion-proof PVC design, eliminating the worry of water leakage and ensuring durability. The internal design separates water and electricity, eliminating the risk of electrical leakage during heating. In addition to safety considerations, the hot water bottle features overcharge protection, overheat protection, short circuit protection, overvoltage protection, over-discharge protection, and overcurrent protection. Hot Water Bottle, Rechargeable Electric Hot Water Bottle 【2025 Winter New Release, Large Size】 Rechargeable Hot Water Bottle, 4-12H Long-Lasting Warmth, Warm, Energy-Saving, Eco-Friendly Hot Water Bottle, Fast Charging, Explosion-Proof Charger, Power Saving, Overheat Prevention Function, Soft Warming Cover Included, Washable, Heating Appliance, For Stomach/Back/Fingertips/Feet, Warm Goods, Cold Protection, Winter Gift, Christmas Present