The most cool and comfortable work shirt you will ever wear. ANSI Class 3 standards. Comes with 2" wide 3M Scotchlite reflective material for torso and upper body. Left breast pocket. 100% Self wicking polyester keeps you cool and comfortable. Colorfast, wrinkle resistant, soil releasing, machine washable with low shrinkage, fast drying, resistant to odors, bacteria and mildew, and washings. Fluorescent yellow.