In the past, water bags were used for hot and cold therapy, which required filling the bag with hot or cold water each time based on the need, causing difficulties for patients. To heat this pack, simply place it in boiling water, on a radiator, or any other heating device, or in the microwave. To cool the pack, it can be placed in the freezer.
This pack can be used thermally to keep food warm, create a comfortable sleeping environment, and alleviate rheumatic pain, back pain, lower back pain, and menstrual pain. When cooled, this pack can prevent drinks, vegetables, and fruits, as well as food items like meat, fish, and vegetables, from warming up or spoiling during travel or picnics. It can also be used to reduce fever and alleviate pain in the first 40 hours after bruising, bleeding, and swelling due to impacts after intense exercise, and it is very effective in reducing migraine pain when placed under the head.