Original Hagner Pages, the world,s number one stock sheets for more than 20 years. NO PVC, no acetate, no polystyrene, no plasticizers, detrimental additives, or sticky adhesives. Every Stamped stamp mounted on Hagner Stock Sheets is firmly trapped between two inert substances. Highest quality pH Neutralized paperboard and crystal clear polyester film have been so strongly joined together that more than 50 overlapping stamps will stay firmly in place under a single strip. Requires no interleaving. Just lift the polyester strip, bend it back, place your stamps in position and let the strip snap back. Size: 8.5x11. Color: Black. Sold in Packs of 5.