Pinit L-Sleeves for Marvel Posters. 22-1/2 x 36". 4 mil POLYESTER. Sealed on 2 adjacent sides. SKU: SLVMP (0)No Reviews yet Add to Shopping Cart Details Marvel Poster L-Sleeve 22-1/2 x 36" x 4 mil Polyester (Mylar) Sealed on 2 adjacent sides. PLEASE NOTE: THESE SLEEVES ARE NOT RETURNABLE. Details Back DetailsMarvel Poster L-Sleeve 22-1/2 x 36" x 4 mil Polyester (Mylar) Sealed on 2 adjacent sides.PLEASE NOTE: THESE SLEEVES ARE NOT RETURNABLE. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review