With hems, the banner edges are folded over and heat welded to strengthen sides and help your banner keep its form. Hemming prevents your vinyl poster content from fraying. Coupled with using grommets, they are encouraged for out of doors banners. Matte Vinyl Banner – Our most widely used and http://rowanfrweh.blogofoto.com/24032049/getting-my-vinyl-banners-denver-to-work