This is a vintage unisex hunting vest made by Allen Sportswear Mfg in the USA during the 1950s or 1960s. The vest is made of beige/brown twill material and is lined with red plaid flannel. It features a solid pattern and is a size 36.

Measurements:

Pit to pit: 18.5
Sleeve length: --
Total length: 27.5
Shoulders: --