Ariat® flame resistant knit shirts are constructed with ultimate comfort, technology and durability in mind. Our FR Hi-Vis Crew is no exception. Designed for workers routinely exposed to low visibility while on the job, it has segmented reflective tape and an ANSI Class 3 Type R certification. FR Hi-Vis T-Shirt Product Features : Greater Arm Mobility™ helps extend arm and shoulder range-of-motion so you can move freelyMoisture Movement Technology™ helps wick moisture away from the skin to keep you dry and comfortable3M™ Scotchlite™ Diamond Mesh improves multi-angle visibility to help you stay safe in low-light conditionsFreshTEK™ odor control helps keep you feeling fresh through long hours of wear, Silver segmented reflective tape enhances visibility in low light and flexes with you for breathable comfort as you work, Colorblock at cuffsRibbed collar and cuffs Men's Flame-Resistant Hi-Vis T-Shirt in Yellow, Size: Small by Ariat