Hot Water Bottle, Classic Rubber Hot Water Bottle with Cover, Portable, Reusable, Therapy Heating Pad, Warming Pain Relief, Great for Pain Relief, Hot and Cold Therapy 2PCrose Safe material - it is made of high density PVC. , non-toxic, explosion-proof and leak-proof, it can maintain heat for a long time. The ribbed outer surface helps to maintain the temperature of the liquid. " Easy to use - Large irrigation port, wide mouth for easy filling, convenient and quick irrigation, good matching between the spirals, no need for gaskets and no water leakage. " Environmental protection leak-proof stopper - updated leak-proof technology, spiral cover, groove leak-proof technology, high temperature resistance, no deformation, to ensure maximum security " Versatile use - The classic design of this classic home remedy. Treating sore muscles, aches and pains, stiff necks, lower back pain, menstrual cramps and other common aches and can also double up as a cold compress for kids with fever or to reduce swelling for minor injuries. " Comes with a plush cloth cover - a soft and comfortable love coat that is machine washable. Multi-layered temperature lock, soft and comfortable to prevent burns on your skin.