5.11 Men's Hi Vis Performance Shirt 100% POLY Imported Reinforced elbow patches; cape back and mesh lining Ripstop fabric and triple stitch construction is durable, anti microbial and moisture wicking Lightweight 3.65 ounces. polyester; retains vibrancy of color for the life of the garment Patented hidden document pockets; front bellows pockets Highly breathable with a 40 UPF rating