The GloWear 8283BK Lightweight Performance Hi-Vis T-Shirt is a Type R Class 2 shirt designed for enhanced visibility and breathable comfort. With an extra soft, jersey-like feel, this 100% polyester fabric is the lightest weight ANSI 107-approved fabric on the market. Great for working in the heat, this reflective safety shirt features a moisture-wicking treatment and underarm vents to keep wearers cool and dry. It is rated to 30+ UPF for protection against the sun's harmful UV rays. The black panel across the bottom hides dirt, grit and dust to keep the shirt looking cleaner longer. Additionally, black vented underarm panels hide sweat and improve breathability. This hi-vis work shirt uses segmented 2 reflective tape for enhanced visibility at night or in low-light conditions. Unlike solid reflective tape, the flexibility of segmented tape allows reflective clothing to feel more comfortable, lightweight and breathable.