Viking 6001O Orange Safety Cotton T-Shirt with UPF 50+ (ultra violet protection factor). Meets Ontario OHSA REGULATION 213/91 SEC.69.1 (1). Made of 100% pre-shrunk cotton ensuring maximum breathability and comfort. Reinforced back, neck and shoulder seams for increased durability. UPF 50+ (ultraviolet protection factor) blocks out 98% of ultraviolet light. Available in sizes S-4XL. Sold as each.