Patagonia Men's Back Step Button-Down Shirt Fit & Design: Regular fit button-down shirt designed for casual, everyday comfort Classic collared neck with a full button-up front Two patch on chest pockets for a classic look Shirttail hem with a slightly longer rear for better coverage Open weave fabric for maximum airflow in hot climates Technology: Cool Wearing Comfort Airy hemp-cotton blend naturally regulates temperature Lightweight construction keeps you cool in warm weather Hemp fibers provide long-lasting wear and a soft feel Additional Details: Machine Wash Warm Do Not Bleach Tumble Dry Low Cool Iron Ultra-lightweight at 193 g (6.8 oz)