●Made in the USA by American Workers ●Extremely Light Weight, 4oz, iFR Flame-Resistant Blend, Super Soft, Moisture Wicking, Quick Drying, Super Durable Clothing ●The “coolest” shirt chosen by thousands of Electric Lineman and Oil, Gas, and Energy Workers throughout the USA ●Meets ASTM F1506 - CAT 1 and NFPA 2112 - Inherently Flame-Resistant – Void of Chemical Treatment ●Tagless & flat-lock seam construction for comfort