Like a layer of armor against the sun, this easy tank protects from harmful rays with UPF 30, and has moisture-wicking technology to keep you dry. 50% polyester38% cotton12% rayon. Omni-Wick High-Performance Wicking Fabric: Pulls moisture away from the body, so sweat can evaporate quickly. Omni-Shade UPF 30 sun protection: Blocks UVA and UVB rays to help prevent sunburn and long-term skin damage. Comfort stretch. Uses: Trail. Imported.