Tackle any challenge head on with the Argon T-Shirt. This technical layer keeps you cool, dry, and stink-free throughout all four seasons by utilizing Outdoor Research proprietary AirVent(TM) moisture management technology. UPF 30 blocks harmful UV rays from reaching your skin, while ActiveFresh(TM) odor control wards off smells even after days of use. A full 83% of this top is made from recycled materials that perform just as well as those brand new, while placing a little less strain on the planet.