Globe-Weis/Pendaflex Binder Poly Envelopes, Side Open, 3-Hole Punched, 1.25-Inch Expansion, Letter Size, Clear, 3 Envelopes Per Pack (89500GW) Acid-free, archival-safe poly protects documents and allows easy viewing of contents Wear, tear and water resistant Gusset expands up to 1.25 inches to hold letter-sized documents Protective flap with Velcro closure Sold by the pack; 3 envelopes per pack