NEW USMC FROG Flame Resistant Silkweight Undershirt Peckham Coyote Brown XL Silk USMC FROG Flame Resistant Silkweight Undershirt by Peckham in Coyote Brown. This authentic military issue base layer is crafted from a high-performance modacrylic and FR rayon blend, designed to provide flame protection while maintaining a lightweight, breathable feel. Features raglan sleeves for enhanced mobility and flatlock seams to prevent chafing during active wear. The silkweight fabric offers excellent moisture-wicking properties, making it an ideal foundation for tactical or outdoor use. Comes from a smoke free home. See pictures for condition/measurements. Please see my other listings. Colors may appear different on different devices. Keywords: USMC, Marine Corps, FROG, Flame Resistant, Tactical, Military Issue, Base Layer, Coyote Brown, Peckham, FR Silkweight, Outdoor, Survival, Combat Gear, Made in USA. #Lightweight #Gorpcore