Hugo Boss Grey Check Suit Jacket / Blazer. 100% Virgin Wool Super 120 shell, which is Trabaldo Togna 1940 fabric, woven in Italy. Label size 44R / UK 54. Measures 21" pit to pit, 24" from shoulder seam to arm cuff, 28.5" down the back from collar seam. 
(The white shirt is not included, it is just for illustrative purposes).