2 Pieces per set, great value. Please pick One size larger than your normal size. Made of comfortable and breathable 100% birdseye polyester fabric. Extremely breathable & lightweight, soft and comfortable, staying cool, quick moisture wicking. Neon colors for high visibility, recommended for Construction, Highways, utility and emergency work. This Glory Max high-visibility long sleeve T-shirts is a necessory clothing that workers can wear to improve how well others see them in a work environment. Hi-vis is especially critical for workers who work around moving vehicles or equipment, especially in low-light environments. This hi vis tshirt is made from 100% bird's-eye polyester material, which is extremely breathable & lightweight, soft and comefortable to wear. It will stay in cool all the time, and quickly wick moisture to keep you dry. Simply plain design, and great quality! **Note : For better fitting result, please pick one size larger than your normal shirt size.