100 Count Diamond-Clear 4 mil EXTRA-HEAVYWEIGHT Poly Sheet Protectors, 8.5" x 11". Archival safe and acid-free. Top loading for easy page insertion. Durable, nonstick and non-glare. 3-Hole punched margins have double-reinforced edges for added durability. 100 Count Diamond Clear EXTRA HEAVYWEIGHT poly sheet protectors, 4 mil thickness, 8.5" x 11" CLEAREST AND STRONGEST SHEET PROTECTORS! Top loading for easy page insertion Durable, nonstick and non-glare 3-Hole punched margins have doubly-reinforced edges for added durability