MWG’s EVOLUTION arc-rated long-sleeve t-shirt is built to work as hard as you do. It is built with our inherent flame-resistant (FR) EVOLUTION fabric that is quick-drying and incredibly breathable. Flame-resistant segmented reflective tape is heat sealed in order to reduce the bulk that is often associated with high-visibility striping, making this shirt as comfortable as it is safe. It scores an ATPV of 11 (!!!) while remaining lightweight and breathable. MWG EVOLUTION is a must-have if you’re working with high voltage outdoors in warm temperatures. Also, great for layering in colder weather.