Developed by Keela, AirXtream is a revolutionary fabric that forms the outer layer of the StormRider Bodywarmer, the StormWalker Jacket and StormWalker Vest. This specially developed 3-layer material concept is the perfect finish to the exo² line of heated clothing. The outer layer consists of a pique weave with a durable water resistant treatment laminated onto a waterproof hydrophilic membrane. This in turn is laminated to the inner liner, which has rapid moisture wicking properties, and has a high percentage of stretch for added comfort while still retaining its durability. Its weatherproofing means it can be used longer on its own when the weather turns bad and acts as the perfect mid layer in colder conditions, reducing bulk while still helping to retain insulation.