This is a T-shirt from the Donner Swim Club, an American swim club. It has the Speedo logo on the back. I bought it at a vintage shop in New York. The color is gray. The size is XL. Length CB 74cm Shoulder width 56cm Sleeve length 20cm Body width 56cm There is no noticeable damage, and the condition is good. The sides are made with a tubular construction, so it's extremely comfortable to wear.