Warm Gift: 2 liters/quarts hot water bottle can load into large capacity of ice cubes and hot water, use them at home, in the dorm, and during travel. Great Gift for Christmas, Mother's Day, Father's day, Birthday etc. Anti-leak Design: Wide mouth design for easy fill. Fill only to 2/3 capacity maximum. Do not use the boiling water, better to add 40-75°C/104-167 °F. Be careful your hands while fill. Make sure maximum safety and transfer the heat well. Safe To Use: Hot water bag free from harmful substances with thermoplastic pure natural rubber that is odorless and recyclable. A screw plastic cap great help to prevent leakage from bottle to avoid burns. Pain Relief: Hot water bag can support hot/cold therapy, for treat sore muscles, stress, migraines, joints and menstrual cramps, also as a cold application for kids with fever or allaying swelling for minor wound. Keep Warm: Grid texture surface, non-slip and anti-scalding. Adopts high-quality soft fleece COVER helps to insulate the hot water and prevent in direct contact from your skin to cause burns and keep warm longer.