Vintage camp shirt champion brand retro single stitch S by todays standards

Says M but it’s a really small shirt. One part of arm seem needs restitched. Clean. Chest across 16 inches. Middle of back of neck down 25.5 inches. Bundling is fun; shop my items to utilize that shipping cost! Please keep in mind Posh shipping labels do have weight limits; see the first listing in my closet for more info. Home is smoke free / cat friendly. No trades or holds. Plz, no price talk in comments.