A yellow short sleeve shirt by comme des garcons homme. Produced circa 1990s in what feels like a plain weave cotton shirting (the garment label has faded completely), the shirt has a two way, convertible collar and pocket at the left breast. It is cut generously, designed to be worn oversized.

There are several faint marks to the body (see last two pictures for examples).

No marked size, should fit unisex S-XL depending on desired fit
Check measurements to confirm fit
All measurements taken flat

Shoulder to shoulder: 49 cm 
Width (chest): 63
Length: 81
Sleeve length: 26.5

Feels like cotton
Circa 1990s