Hi-Vent is a uniquely constructed waterproof breathable fabric. It is engineered to be lightweight, packable and more breathable than other unlined treated fabrics. Hi-Vent DT is created by applying a polyurethane coating with a special DT print matrix which acts as a dry-touch, half-layer coating. This half layer adds durability and comfort by physically separating the hi-vent polyurethane coating from the skin, eliminating the need for a liner. In cold conditions, an aluminized effect also helps reflect heat back towards the wearer. Hi-Vent DT is extremely water repellent and wind resistant.