This vest is cool, man.

The Macna “Dry Evo” Cool Vest has been upgraded for 2019 with the filler cap changed and relocated to reduce interference when wearing a backpack. The vest works on a simple evaporative system. Add 600ml of water into the two layer vest, and the water is absorbed into the special internal weave. As air passes over the vest the evaporative effect creates significant cooling, creating up to 15c degrees temperature reduction, minimizing perspiration loss and keeping the rider dry. 600ml of water can last up to three days of riding before needing to be refilled. The vest is made of nylon with an anti-bacterial treatment, so there are no problems with washing it. Holes for extra ventilation are included and all-up weight is about 1kg. Available in sizes S to 5XL at $249.95 from all Macna stockists. See www.macnaridinggear.com.au/