The simple concept here is to take a cheap polo and extend the arms down to just below the elbow. This is my first attempt at working properly with an annoying knit fabric.
These two polos were found adjacent to each other on the rack, both too small.
I had to expand out the midsection with a vertical stripe along the side seam to avoid lookng like a pressed sausage. That piece comes to a point just under the armpit where the sleeve is attached. The arms were sewn in right over the elstic band with a double-headed needle for stretch. I couldn't come up with a clever way to hide this seam without destroying the shirt. It doesn't look great but it's something only I would notice. Overall I'm happy with the design, I'll have to pray the stitching holds up.
Gus ~ 7/13/2016