This is a custom-made copy of the Apollo-era astronaut jacket. These are hand tailored to meet a person's measurements and is a dead-on, museum-quality replica of the ultimate flight jacket from that era. I lucked up by finding someone wanting to sell his and he was extremely close to my size. the jacket fits like perfectly. Best of all, I got it for a fraction of the normal cost (which is staggering).
More on the jacket itself can be found here: http://www.collectspace.com/news/news-120313a.html