Cooling vests have been around for a while and have proven themselves during the hot summer days! They not only provide extra comfort, but also reduce the risk of heat stress, fatigue and loss of concentration. The Cooling Vest Dry Evo from Macna is no exception! How does it work? The vest is activated by filling it with 500ml (tap) water. Then you put on the vest (preferably in combination with a passing fan, this ensures a maximum cooling effect) and then enjoy the much needed cooling during hot summer days! The technique makes it possible! The available water evaporates through the application of a patented technology. Unlike conventional cardigans that use similar cooling techniques, this cardigan remains dry both on the inside and outside. And the useful life is many times greater thanks to the efficient regulation of the evaporation process! Fully filled has the capacity to cool one to three days, depending on the ambient temperature in which you drive. In addition to the high service life, it also has a high service life. The vest is washable and even after many washes the vest ensures cooling without getting wet! Maintenance The vest should be hung up after use so that the moisture can be removed. After the cardigan is completely dry, the cardigan can only be stored. Features Made of Nylon Jersey and PU Ultra Fresh Antibacterial, avoids unpleasant odors Maximum content of 500ml (tap) water Filling opening is on the back (waterproof zipper) for more comfort