This is a gorgeous suit separate / sport coat from Brooks Brothers'. 

Made of a four-season-weight wool blend, it's black.

The jacket features a two-button front, center rear vent, and front flap pockets. 

This jacket is NEW, without tags.  Front pockets are still stitched shut. It is guaranteed to be authentic and absolutely perfect.

• LABEL: Brooks Brothers
• COLOR: Black
• MATERIAL: 98% wool and 2% Lastol
• FRONT BUTTONS: Two Buttons
• CUFF BUTTONS: Four Buttons
• FRONT POCKET TYPE: Flap Pockets
• INTERIOR POCKETS: Three Pockets
• VENT: Center Rear Vent
• LINING: Full Lining
• TAG SIZE: 48R (US)
• SHOULDER SEAM TO SHOULDER SEAM: 20.5 Inches
• ARMPIT TO ARMPIT: 26 Inches 
• WAIST ACROSS TOP BUTTON: 24.5 Inches 
• COLLAR SEAM TO BOTTOM OF BACK: 32 Inches 
• SHOULDER SEAM TO END OF CUFF: 26 Inches 
• CONDITION: NEW
• COMMENTS: Gorgeous jacket!

All measurements done across the back with the jacket laid flat. 

Compare my measurements with a jacket you have that fits you well. Even new and unworn items may have been altered. You will NOT be disappointed.