The Regatta Professional TRF656 Hi-Vis Yellow & Navy Sweat Top is an EN ISO 20471:2013 A1:2016 Class 2 certified, high visibility fluorescent garment that is made of 100% polyester brushed back fabric, with crew neck and ribbed cuffs and hem, for comfort and durability. Angled hi-vis chevrons show which way you're facing in low light so ideally suited for construction, utility and road workers as well as emergency responders, in fact anyone who needs to stay visible and protected, even in low light conditions.