The NKE Men's FR Baselayer T-Shirt delivers dependable flame-resistant performance, mobility, and everyday utility in a durable t-shirt built for demanding jobsite wear. Built with 5.5 oz. Birdeye 60% Modacrylic Blendmix Spandex, this piece is designed to hold up through long shifts while maintaining comfort and range of motion. Key details include Bird-eye fabric - breathable, stretchable and lightweight, Inherently aramid sewing thread for strength and durability, and Raglan sleeves for arm mobility, with two logo prints on arm. It is compliant with NFPA 70E, UL certified to ASTM F1506, and arc rating of 6.0 cal/cm².