Description Premium MaterialOur hot water bottles are made from 100% PVC material; Thicker material than others, can be used alone; Soft outer surface helps maintain liquid temperature. Stay warm to 2-3 without covering; 6-7 hours in bed.Safe for kids, seniors and pets. BEST ASSISTANTThe classic design of this classic home remedy. Treating sore muscles, stress or cramps, arthritis, aches and pains, stiff necks, lower back pain, menstrual cramps and other common aches and and can also double up as a cold compress for kids with fever or to reduce swelling for minor injuries. No Leakage DesignWide mouth is easy to fill; anti spurt lip prevent water spitting back out; Medium capacity, easy to carry; DO NOT USE BOILING WATER(Do not exceed 90/194); The maximum capacity is two-thirds of the bottle with good thermal effect. PVC warm water bag is flexible to be molded to any part of your body to get the heat exactly where it needs to be to relieve pain or discomfort, also as a cold compress for kids with fever or to reduce swelling for minor injuries. Perfect PresentA perfect gift for your mother, children, wife, husband, pets, or someone you love, give them a hot water bottle they would like, and the soft hot water bottle will become their best bedroom companion in the chilly night.