This listing is for a men's Gap Western-style snap-front shirt. 

The shirt is made from a black denim cotton and features snaps down the front, on the pockets and the cuffs. It also has the Western-style shoulder and back yoke reinforcement, as well. 

It is in used condition and aside from some degree of fading from wear and laundering, it also has some wear to most of the edges of the fabric along with a hole to the side seam of one of the chest pockets (see photos). 

Labels indicating brand, size, region of origin, fabric content, and laundering information are present. 

Shirt is marked as a US men's Medium. Our measurements are as follow:

Collar, snap to snap, laid flat: 15 1/2" 
Across chest, pit to pit, snapped, laid flat: 23"
Across waist, snapped, laid flat: 22 1/2"
Sleeves, shoulder seam to end of cuff hem: 25"
Shoulders, seam to seam, across back: 17 1/2"
Overall length, bottom of collar seam to bottom hem, in back: 29 1/2"