Field-Tested 7-ounce, lightweight, flame-resistant twill NFPA 70E compliant Flame-resistant melamine buttons Carhartt's flame-resistant twill shirt with pocket flaps works as hard as you do. - 7-ounce, FR twill: 88% cotton/12% high-tenacity nylon - Loose Fit (formerly known as Original Fit) - Loose and Original labeling is a change in name only, sizing/fit does not differ. Stock may vary in labeling. - Two chest pockets with flaps and button closure - Extended sleeve plackets with two-button adjustable cuffs - FR melamine buttons throughout - Button-down collar band with button closure - Triple-stitched main seams - Carhartt FR and CAT 2 labels sewn on left pocket - Meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112 - CAT - 2 - ATPV(CAL/CM2) - 8.6 -