This is a gorgeous shirt from Peter Millar.

Made of 100% cotton, it's a plaid in gray, brown and blue.

The shirt has a left chest pocket.

This shirt is in PRISTINE, MINT condition.  Looks and feels unworn. It is guaranteed to be authentic and absolutely perfect. 

I have measured the shirt and: 

The neck measures 15.5 inches from button to button hole.

 The sleeve length is 34/35 inches from mid-collar to the end of the cuff. 

Across the back, laid flat, the shirt measures 23 inches armpit to armpit and 32 inches from the collar seam to the bottom of the back tail.