Flame-resistant, 5-1/2-oz., Aramid (Nomex) shirt is designed for use by wildland firefighters as a safety garment. The bright-yellow shirt is single-breasted with a button front, a rolled collar and a straight-cut bottom. Shirt has two flap-closing breast pockets and hook-and-pile fasteners for pockets and cuffs. Left pocket has a compartment for pencil storage. Forest Service Spec 5100-91.