The KUHL AIRSPEED LS Shirt is a game changer. Experiencing hot sun, high humidity, and finding absolutely no breeze to provide relief? Perfect conditions for KUHL's AIRSPEED collection of shirts with AirVolution fabric, a woven technical nylon/poly blend that blocks the sun's harmful UV rays, wicks moisture and dries quickly. AirVolution has the Æ’‚‚Å¡‚¦‚Å“cotton touchÆ’‚‚Å¡‚š‚ against the skin,yet with all the performance of polyester. Throw out the rulebook, shirt technology has changed with the AIRSPEED Shirt and AirVolution fabric.