Thank you for viewing. Fupesu Hot Water Bottle, Capacity 2L, Water Injection Type, Eco-Friendly Hot Water Bottle, Rapid Heating, Cold Protection, Soft PVC, Warmth Retention, Fatigue Relief, Ideal for Menstrual Periods, Perfect for Winter Cold Protection (Gray Hedgehog)... "Safe and Highly Insulating Hot Water Bottle" The hot water bottle uses soft PVC material and is combined with a safe, airtight cap and a cute, non-slip cover. Comes with a Japanese instruction manual, it is flexible, high-temperature resistant, highly insulating, anti-aging, and uses safe and harmless materials. It does not require electricity and is less likely to dry out the skin. It is perfect as a gift for winter, Christmas, and New Year for friends, family, and the elderly. "Cute and Non-Slip & Hot Water Bottle Protective Bag" Comes with a cute cashmere protective cover. The crystal velvet is double-sided velvet with polyester on the surface and nylon chambray on the back. The fabric feels good to the touch, and not only prevents low-temperature burns, but also increases heat retention. The protective bag is designed to be removable, so it can be easily and conveniently washed with water. "Highly Insulating" To prevent water leakage, the water inlet uses a deep screw-type mouth and a screw cap combination, which fits perfectly, so you don't have to worry about getting wet even when you put in hot water. After testing in the laboratory, it can keep warm for up to 6 hours (Note: The protective cover must be attached). When used on the stomach or lower back, it can maintain a warm temperature for about 3-4 hours, depending on how it is used. Before going to bed, if you put the hot water bottle in the futon first to warm it up, it will relieve the pain of menstrual periods. It is also ideal for warming hands and feet. "Recommended Usage & No Electricity Required" Easy to use, no electricity or direct fire required, easily enjoy warmth. Because it doesn't take up much space, you can easily use it not only at home, but also when you are out and about or at work. In the cold winter, a warm hot water bottle will warm your body. "Specifications & Instruction Manual" Included items: Hot water bottle *1, Instruction manual *1, Cute protective bag. Main body dimensions: 31cm * 20cm. Instruction manual: Use by directly injecting hot water.