This Shirt Would Really Pop Under A Blazer Or Sports Jacket. And If You're Bold Enough, Unbutton Those Top Two Or Three Buttons, Roll Up Those Sleeves... And Wear It By Itself With Some Jeans For A Casual Look. You Go Boy! Neck 17.5". Sleeve Length 34-35". Chest Pit To Pit: 27" (Or 54" Cir). These Measurements Equate To A 2xl - 3xl Depending On The Make And Style Of The Shirt.