This is a loose weave knit short sleeve sweater from the early 80s. The knit and color pattern are unique with horizontal color stripes and vertical knit strips.  The color are a mix of light and dark beige, khaki brown and kelly green. Brand is Beldoch Popper - made in USA.

It's in very good condition - no stains or snags. 

PS the sweater isn't crooked - it's my photography. :)

Measurements:

No size indication by fits like a Women's large

Length 25"

Pit to pit 17"