Warmth Gift: This 2L capacity hot water bottle with cover is the best assistant for bed warming at cozy night. It's perfect gift for Christmas, Valentine's Day or birthday to give it for lover, friends or the elderly. Multi-purpose: This hot water bottle can ease joint disease, sore muscles, dysmenorrhea and other common aches. It can be also used cold application for fever or subsidence of minor swelling wounds. Large Capacity & Heat Retention: This 2L capacity hot water bottle can bring warmth to the whole body. The super tightness design makes the hot water bottle good in heat preservation performance, which can keep warm for over 6 hours. Cool & Heat: For keeping you cool during hot summers, for warming in cold winter days. With a soft cloth cover, prevents burns caused by direct contact with your skin and keep warming. High-quality Material: Hot water bag is made of high-quality PVC material, odorless & non-toxic. It can hold heat longer than a traditional hot water bottle. What's more, it's suitable for Microwave oven heating.