This was limited to 250 sold on the second day (Friday) of Comic Con 2014. This zips all the way down in the front and is not like the C2E2 version (which was a pull-over). Very Rare and limited in production. This is officially licensed by Marvel - Accept no imitation!
This is of higher quality than the ThinkGeek version as this comes with the Winter Soldier embroidery and front pockets. The ThinkGeek version does not, and is not the "official SDCC exclusive" version as they now claim it as "ThinkGeek exclusive."