【Long-lasting insulation & thermal protection】With 2.6mm thicker bottle,this hot water bag not only can heat dissipation evenly but also long-lasting temperature lock. Fill the bottle with hot water, place it in the bed up to 10 minutes before going to bed, our thermal hot water bottles will prepare a warm and wonderful sleep atmosphere for you.There is a knitted insulation sleeve to prevent high temperature burns.Insulation cover can be removed at will, easy to clean.【No odor & microwaveable】: Made of high heat stability food grade silicone material, This hot water bottle can withstand 200℃ high temperature and heat without odor. After filling the water, put the hot water bottle into the microwave, it only takes one minute to heat, the water inside can be reused. Note: heating time ≤ 1 minute, heating power ≤ 800w.【Ice Bag Function & Family companion】You can use this hot water bottle with cover to relieve daily muscle pain and relieve fatigue through heat therapy. Put it into the freezer, you will get a ice bag. The silicone water bag can be used as a cold compress for pains, sports injuries, fever and reduce swelling.【Large-diameter water filling port & creative screw cap】Wide mouth is easy to fill and to help avoid hot water spills resulting in burns. Screw cap consists of 4 circles of spiral pattern and waterproof silicone pad, non-slip and leak-proof, you can use it at ease. The rubber ring below the screw cap is an important part to prevent water leakage.【Cute Protective Cover】hot water bag comes with a soft removable knit cover to help insulate the hot water and maintain effectiveness for 6-8 hours. It also protects the hot water bottle from crash and dirty and keeps your hot water bottle using longer. The cute and attractive pattern on the cover makes the hot water bottle a thoughtful and cozy gift for your mother, father, children, friends in Mother's Day, Thanksgiving Day, Christmas and New Year's Day.