For a smarter alternative to a standard T-Shirt, why not go for a Hi Vis Polo Shirt? Available in black or EN ISO 20471 compliant orange, you can be sure to find a polo shirt for the task at hand.
2 band & brace
100% polyester fabric
Ribbed collar and cuffs
Side vent detail
Conforms to EN ISO 20471 Class 2 (Yellow only)