COLUMBIA OMNI-SHADE long sleeve button down men’s shirt. Breathable. Size LG Our most breathable sun protection yet with new fabric venting and fiber, yarn, and fabric structures built to stop a wider range of harmful UV rays. Enhanced sun-blocking provides superior protection New fabric venting enhances airflow and breathability Higher air permeability keeps you cooler and drier BEST FOR Ultimate protection and breathability in moderate to extreme sunlight WEIGHT Lightweight PROTECTION TYPE Breathable Sun-Blocking up to UPF 50 BREATHABILITY High Breathability