PACKAGE INCLUDE: 1 rubber hot water bottle, dimensions: 96 * 156mm 300ml) SIMPLE OPERATION: The wide mouth hot and cold water bottle is easy to fill and use. The hot bag for pain relief is multifunctional. Use it for neck and shoulder pain, medical purposes, during pregnancy or as a foot warmer. KEEPS YOU HOURLY WARM: The bottle and lid are designed to retain heat for your comfort. The soft covers distribute the heat evenly and protect you from excessive heating. It's ideal for warming your bed. PERFECT PRESENTATION: The multifunctional hot and cold water bottle is the best gift for your mother, children, wife, friends. The hot and cold water bottle can be used at different times of the year. Become your best bedroom companion on cold nights and you can also use it as an ice pack. -SERVICE: Our products are made of high quality silica gel, use high pressure and high temperature molding technology, strong and explosion proof, safe and environmentally friendly. If for any reason you are not completely satisfied with this product, please feel free to contact us Steps to use: 1 . Roll up the liner and stuff it into the fabric sleeve 2. Unscrew the threaded plug 3. Pour 2/3 of the hot water in 4. Drain the excess air in the hot water bottle 5. Tighten the threaded water screw 6. Turn it over to see if there is a leak The products are all available in kind. However, there may be slight color difference from the actual product due to light problem or display problem. The temperature of the hot water should not exceed 80 degrees Celsius.