US Mountain Running Shirt

SIX03's Mt Washington Road Race Design.   This is the lightest, most breathable fabric available. It is borderline mesh, but also features a UPF sun protection rating of 30. They are designed to have a Relaxed Running fit, and moisture management advantages, with 1-2” of ease. Made of advanced  fabric for maximum breathability and featuring a UPF sun protection rating of 30. The fabric has a 4 way  stretch allowing it to fit next to and move with the body in motion. ***Singlet: If you prefer a looser fitting top it is recommended that you size up.