Pack of 10 Bags BCW Graded Comic Mylar -4 Mil. Heavy Duty 9 x 14 1/2 (#CS172)
Heavy Duty 9 x 14 1/2 (#CS172). Details:These 4 mil Comic Book Sleeves are made of Archival Polyester (Mylar) an inert material of the highest clarity. Made of Archival Polyester(Mylar). 4 mil material thickness.