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™ moisture management technology. UPF 30 blocks harmful UV rays from reaching your skin, while ActiveFresh™ 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.