Description: This hot water bottle is color changing after injecting warm water, which is funny and cute for you to use in cold winter season. Designed with seal and anti-leak proof screw lid, this warm hand treasure is safe for kids to use in daily life. Made with plastic material, this hot water bottle is lightweight and eco-friendly. The length of this product is 18cm and width is 13.5cm. It is the best warm choice for winter travel, camping, hiking or other outdoor activities. Item Name: Hot Water Bottle Material: Plastic Features: Portable, Heat Resistant, Eco-friendly Size Details: Size: 18cm x 13.5cm/7.09" x 5.31" (Approx.) Notes: Avoid directly into the boiling water, water temperature at 80 degrees Celsius and rushing into 3/4 of the water is appropriate. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hot Water Bottle(Others Not Included)