The Ariat Men's Base Layer FR Crew Neck Shirt is a 7.2 oz. FR jersey cotton base layer rated 8.9 cal/cm2 (CAT 2), built for electrical, oil and gas, and industrial workers who need close-to-body upper-body protection that can sit under outerwear or serve as a standalone FR knit when the hazard assessment allows. This shirt has a comfortable baselayer fit, with rib-knit collar and cuffs, a taped inside back seam, raglan armholes, and arm mobility technology that helps keep the cuffs down while you reach, climb, or work overhead. Those details matter on a base layer because sleeve creep and seam irritation become obvious fast once the shirt sits under a vest, jacket, or daily-wear overshirt. The crew neck profile also layers cleanly under FR outerwear without the bulk of a henley placket or button-down collar. Ariat adds moisture movement technology that pulls moisture to the outside, which gives this crew neck a clearer use case than a generic long-sleeve FR knit. Tyndale carries J026Y in Navy Blue, Sand, and Silver, with sizes from Small through 4X-Large and Regular and Long lengths (subject to availability). For care, you should always follow the instructions on the garment label,. Generally, you should wash FR garments in warm water, tumble dry low or line dry to limit shrinkage, and avoid bleach, fabric softeners, orand starch. Properly cared for, this garment maintains its flame resistant properties for the useful life of the garment. https://tyndaleusa.com/fr-safety-resources/technical-library/standards-and-test-methods/arc-flash-standards/astm-f1506/