This new tropical rayon blended shirt with NANO-DRY technology gives permanent moisture management and UPF40+ protection from the sun. MAXComfort - NANO-DRY technology provides permanent moisture wicking action to keep you more comfortable from the first time you wear it, to the 100th. Inherent stretch completes the comfort story. MAXPerformance - NANO-DRY technology produces a technically superior fabric, engineered to offer durability and comfort unsurpassed by other rayon blend uniforms. Our open weave, tropical fabric is rugged without being rough.