Rolled Poster Sleeves 4.5"x38" 1.25mil Clear Flat Poly Poster Sleeve 100 Pieces This bag's width is 4.5 inches, your rolled-poster's circumference should less than 9 inches. 4.5 This item is packed a 100pcs/pack. Make from 100% virgin, high clarity low density polyethylene (LDPE) film. Excellent use for posters, maps and documents.