Stay comfortable with the TYNDALE MEN’S FRMC LAYER 1 SHORT SLEEVE FR T-SHIRT. Designed as a base layer, this lightweight flame resistant t-shirt is made with inherently flame resistant fabric and flat-lock seam construction. The M011T features breathable technology that is moisture wicking and fast drying making it perfect for warmer days. The layer 1 short-sleeve is arc rated 4.6/CAT 1 and is proudly made in the USA by Tyndale.