http://www.rosecitytextiles.com/ Portland based textile company in NW Portland. Bulk outdoor fabrics (for clothing, shelter, gear) I have no affiliation. I just know of people talented enough to sew garments and shelters. You might consider the research and see if it fits your needs. Christmas is coming so get on it!
Outdoor Fabrics Available (Do you know how to sew? Do You Need Clothing?)
