We designed our Arbor short sleeve button up shirt with a clean casual look and all day comfort in mind. Constructed of a technical, breathable nylon-poly blend with hidden-button collars to prevent collar flare, this short sleeve shirt is just at home running the boat as it is out on the town. 52% Nylon / 48% Polyester UPF 30 Sun Protection Yarn dye woven with concealed button down collar flaps Single front pocket with button closure Soft microfiber lens cleaner Arbor Short Sleeve Button Up Shirt S M L XL XXL Chest 39" 43" 47" 51" 56" Body Length 29" 30" 31" 32" 33" Sleeve Length 9" 9.5" 10" 10.5" 11"