The uniforms I refered to were Navy Issue, WWII and a bit later--the Dragons etc came with occupation or mostly with Korea. The jumpers of that time were not zippered, but slip on. I had several given to me after WWII when I was diving at Catalina, and would come up almost blue after either clearing a boat's running gear from a mooring line, or anchor rode, or having retrieved a piece of Jewlery. Of course I didn't usually have a shirt with me, and chattering teeth got me more money ($10 was a lot of lawns to cut back then!, a cup of hot choclate and on several occasions one of the Navy Jumpers.