Men’s Vuori brand short sleeve button down. I bought this last year at REI full price for my 18 year old son’s formal (ish) dance. He wore it an hour and it’s hung in his closet since. Very nice shirt for man size medium. My son is 6’4 and 175 lbs so he’s rather slim and this fit perfectly. Gray/tan color with a subtle circle print. Front chest pocket. Moisture wicking material, light weight for warmer months, this would be perfect to wear as a guest to a wedding or any semi dress up events. Made of 100% recycled materials. Measurements Chest 21.25 in (lying flat pit to pit) Length 30.5 in Sleeves 16 in (neck to hem in sleeve) Back 17. 5 in