Where can i get a New England Patriots Ascent 2009 Sideline Drift Full Zip Fleece Hooded Jacket?

I tried nfl.com and they did not have it. This is the sweatshirt i always see the pros wearing on the sidelines. i found it on this site but they only have the size xxl for the patriots. I'm a size xl. Should I shrink it? Can anybody find me a site where I can get this sweatshirt. http://fanshop.sfgate.com/New-England-Patriots-Ascent-2009-Sideline-Drift-Full-Zip-Fleece-Hooded-Jacket_-1097428142_PD.html