DESIGN: Cotton Comfort fabric, which is lightweight and breathable, this short sleeve t-shirt has a taped, crew neck seam for extra comfort and uses reflective tape for enhanced visibility; it is 35+ UPF rated fabric to block 97% of UV rays. FUNCTIONALITY: Breathable fabric to draw moisture away from the body, keeping the wearer cool, dry, and comfortable, reflective tape for increased visibility, with EN ISO 20471 certification after 50x washes, and in orange, this T-shirt complies with RIS 3279-TOM for the rail industry. PRODUCT CARE: Machine wash warm, mild process. Do not bleach. Drip Line dry. Do not iron. Do not dry clean. Maximum number of washes = 50 times. MATERIAL, SIZE AND RANGE: Cotton Comfort Short Sleeve T-Shirt. Available in Orange (Regular, S - 5XL) and Yellow (Regular, S - 5XL). 55% Cotton, 45% Polyester, Knit 175g STANDARDS: ANSI/ISEA 107: 2015 TYPE R CLASS 2, EN ISO 20471 Class 2, RIS-3279-TOM ISSUE 1 (ORANGE ONLY), S170 achieves EN ISO 20471 Class 3 when combined with E046