Bronson of California Vintage Tie Front Koi Fish Top - Gently used. The tag is torn and there is maybe the slightest yellowing / thinning in the underarm area, but otherwise no major flaws

No material label - Likely poly knit or nylon
The tag says 9-10 but not sure if that's referring to the size

Shown on an XS/S mannequin with 33" chest and 24" waist

Measurements are done lying flat with no stretching and are approximate - 
Shoulders 14"
Chest (underarm-underarm) 18"
Length (shoulder-hem) 16"
Sleeve (shoulder-hem) 9 1/4"