Specification: Color: Green, Grey, White; Material: Solid silicon + Nylon PA66 + Food grade PP; Capacity: 330ml; Size: 212 x 70 x 46mm /8.34 x 2.76 x 1.81inch; Weight: Approx.114g; Features: 1. Hot warmer:Warm your hand, leg, abdomen, stomach, or elsewhere with this hot water bag to keep you stay warm and cozy throughout the chilly winter. Ideal use while sleeping or travelling, in home, office or on-the-go, also thoughtful gadget for women during physiological period. The threaded leakproof hot water bag provides you hot/cold therapy without worries about water leakage, quite safety in use. 2. Cold therapy function: Fill the bag with cold water, and then put it into refrigerator, you will get a ice bag for cold compress for pains, sports injuries, fever and reduce swelling. 3. Sofe silicone material: Made offood grade silicone, allergy-free, odorless and recyclable. Excellent durability and longevity that can stay safe and sound through both high low temperature, well designed to last 4. Microwave oven heating: Upgraded design supports heating by microwave oven, which means that when water inside bag gets cold, you don't need to take out the cold water and replace with the hot, you just put it into microwave oven and heat, very convenient in use. Fast heating within 3 minutes only(should not exceed 3minutes), no longer to wait. 5. Wildly used: Hot water bag for winter, cold ice bag for summer. The dual-use water bag can help you do hot therapy or ice compress, always working the way you need. Compactly designed, light weight, use it indoor or outdoors during travelling, business trip or on the airplane. Gift for Birthday, Christmas, Valentine's Day, Gift Exchange Party, Birthday, etc. Operation: 1. Sleeve the bag with knit cover(Knit cover it optional). 2. Fill bag full with hot water(Temperature at about 80 recommended). 3. Tightly screw up bag and ready to use. About Microwave Heating: 1. Remove the knit cover, fill bag with cold water and screw back the lid. 2. For microwave heating, heating time should not exceed 3 minutes, and empty bag heating is prohibited. 3. Please stop heating of expansion and other abnormal conditions while heating in microwave, and do not open the microwave. 4. When not in use, drain out water and inject appropriate amount air, store in shade. Package Included: 1 x Silicone Hot-water Bottle; 1 xKnit Cover