Hot water bottle for kids - High temperature resistant silica gel material - Rotating bottle cap to prevent leaks - Small and portable, suitable size for adults and schoolchildren - Warm and washable knit cover for better insulation - Multipurpose for heat therapy on cold feet, joint pain, cramps, and menstrual pain - Ideal gift for Christmas, birthdays, and New Year - Measurements: 10.3 cm x 16 cm, capacity of 320 ml