1. AIR: Van Heusen AIR trunk is made with innovative, breathable, ultra soft fabric equipped with Swift Dry technology which is super soft on your skin while also drawing perspiration from it and keeping it cool and dry.2. Swift Dry: Swift Dry Technology draws perspiration from the skin; keeping the body cool, dry and comfortable. Especially made for active-wear use.3. Flexi Stretch: Easy to flex, the stretchable fabric construction enhances comfort and flexibility and allows ease in movement.