With hems, the banner edges are folded around and heat welded to reinforce sides and help your banner manage its form. Hemming prevents your vinyl poster materials from fraying. Coupled with using grommets, these are definitely recommended for outdoor banners. To stay away from wrinkling when storing, we recommend you http://vinylbannersindenver28033.free-blogz.com/21968860/detailed-notes-on-denver-car-wraps