Tyndale Men's FRMC Layer 1 Performance Long Sleeve FR T-Shirt FRMC? Made in USA 4.6 oz FRMC Jersey Knit; INHERENTLY FLAME RESISTANT FABRIC; Designed as a baselayer Moisture wicking & fast drying; Tagless & flat-lock seam construction for comfort; Flash fire rated-meets NFPA 2112 Lightweight & breathable technology; Exterior Tyndale FR labeling Made in USA by Tyndale; Arc Rating: 4.6 ATPV / HRC:1 Product Highlight Video; Watch Here