Arc'teryx Men's Button-up Short Sleeve Shirt Sz M Orange Plaid Zip Pockets. Shirt is in good preowned condition. There is a small area of discoloration on the back of the collar. (Please see last photo.) Lightweight 72% cotton, 28% polyester fabric. Spread collar. Two chest pockets with zipper closure and mesh interior. Mesh interior panel at back of yoke. Curved hemline. Arc'teryx logo embroidered in yellow on back below collar. 

Measurements laying flat:
Item comes from smoke-free, cat-friendly home.