Shirt of Mongolia
Looked at the company website, and sure enough - a "source" dot in Mongolia.
My only experience with Mongolia (besides the shirt, that is) was the team of Mongolian Army soldiers that were at Bagram AF to help the Afghans with demining and training on artillery. I suppose if any country has a long time military tradition, it would be Mongolia, heh heh.
An interesting place, if you care to learn a bit about it, start with this.