This is a gorgeous shirt from Peter Millar.

Made of a lightweight blend of linen and silk, it's what I'd call royal blue.

The shirt has a button-down collar, two-button cuffs, a left chest pocket, and a squarish tail.

This shirt is NEW, with tags. It is guaranteed to be authentic and absolutely perfect. 

Marked Extra Extra Large.

The neck measures 19 inches from button to buttonhole.

 The sleeve length is 38/39 inches from mid-collar to the end of the cuff. 

Across the back, laid flat, the shirt measures 29 inches armpit to armpit and 37 inches from the collar seam to the bottom of the back tail.