Stay protected and comfortable on the job with this Flame-Resistant (FR) Base Layer Shirt. Designed for demanding work environments, this lightweight t-shirt delivers reliable arc flash protection while maintaining the breathable, moisture-wicking comfort you need while on the job. The inherent FR fabric provides protection that won't wash out even after repeated wear and laundering, making it a dependable everyday essential you'll want to layer under your uniform. Its streamlined design layers easily under PPE kits, protective garments, firefighter uniforms, welding clothing, and more without adding bulk. Crafted from a 5.6 oz blend of modacrylic, cellulose, polyester, and spandex, this base layer long sleeve shirt offers stretch for ease of movement and a soft feel against the skin. It's ideal for firefighters, welders, mechanics and those in industrial, utility, and jobsite settings where certified protection and comfort are essential. Our workwear and apparel doesn't stop there. We've been in business since 1967 producing clothing, uniforms, and more for the military, law enforcement officers, firefighters, and other industries. Whether you need uniform shirts, pants, polos, shoes, or something else, Propper is proud to make clothing and gear defined by precision, quality, and value.