A hot water bag is a fundamental heating device that serves as a natural method of pain relief and keeping the body warm. The basic apparatus is commonly made of rubber, along with a plastic composite material.

Directions to use:

• Maintain an upright stance for the bag.
• Unscrew the bag and fill it to a maximum of two-thirds capacity with hot water.
• Expel the extra air with your hands.
• Ensure that the stopper is securely fastened.
• Check for leaks by turning the bag upside down.