Professional material and product highlights: Compared to traditional hot water bottles, the ribbed outer surface helps keep the heat in longer. They are soft, pliable, flexible and durable.USEFUL ASSISTANT - The classic design of this classic hot water bottle. Treats sore muscles, stress or cramps, arthritis, aches and pains, stiff neck, lower back pain, menstrual cramps and other common aches and pains and can also be used as a cold pack for children with fever or to reduce swelling from minor injuries.GREAT FOR PAIN RELIEF, HOT AND COLD THERAPY - The hot water bottle can be used alone as a remedy for aches, pains and sports injuries. In addition to traditional heat therapy, it can also be used as a cold compress for children with a fever or to reduce swelling for minor injuries.WHERE TO USE IT: When it's cold outside - Relieves aches and pains related to sports injuries, menstrual cramps, arthritis and pulled muscles - Brings extra warmth anywhere you need it: in the car, while camping or travelingGREAT GIFT CHOICE - The perfect birthday or holiday gift for friends and family, ideal for keeping you comfortable at night or for quick pain relief.