The science:
Cooling Vests stimulate Brown Adipose Tissue (brown fat) causing the consumption of calories. The science is backed by numerous international studies, scientific research and tests. Several studies mention the importance of brown fat and the potential of cold exposure to prevent increase in body weight.
Simply put the PCM inserts in ice water, refrigerator or freezer or store it under 10°C/50°F until it becomes fully solid. Cooling duration: up to 2,5 hours depending on environmental conditions.