Salomon build the Radiant Stretch Short Sleeve shirt with a fast drying, fully stretch fabric, treated with both UV and anti-microbial protection, and add eyelet fabric at back for maximum breathability. It's a shirt that works as well for highly active pursuits as it does lazy days in the cabana. Lightweight stretch polyester enables complete freedom of movement. UV treatment for sun protection. Anti-microbial treatment resists odor. Material: Polyester.