The front of this vest is made of windproof and waterproof transparent High tech covering with characteristics of elasticity. The back is made of a wide structured mesh fabric which allows a proper air exchange and facilitates the evaporation of sweat, keeping the body dry. The sides are made of stretch fabrics and help the item to adhere perfectly to the body. The light colour at the back helps maintaining body temperature. This item has been carefully studied to be particularly light and pocket size.