✐ Hot Water Bottle Yutanpo Eco-Friendly Hot Water Bottle Capacity 1L Fill with Hot Water Type Cute Soft With Insulation Cover No Electricity Needed Cold Protection Goods Warm Goods Heating Appliances Ideal for Menstrual Period Cold Sensitivity A hot water bottle that uses PVC material and a knit cover for long-lasting heat retention. - Color: Dark Gray - Material: PVC, Knit - Design: Knit cover with stripes - Heat Retention: 63°C for over 1 hour, 45°C for over 3 hours, 30°C for over 6 hours With a cold resistance of -20°C and excellent durability, it keeps you warm for a long time! No electricity needed! You don't have to worry about problems like not being able to charge, explosions during charging, or the anxiety of leaving it charging while you go out! It's an eco-friendly heating appliance that's great all year round: about 3-5 hours indoors in winter, about 6-8 hours in bed, a water pillow in the hot summer, and a warm hot water bottle in the cold winter! A simple knit product cover that feels like wearing a turtleneck sweater! Cute and luxurious, it's a very popular gift! $$1000