Staples Staples Multipurpose Copy Fax Laser Inkjet Printer Paper, 8 1/2 Inch X 11 Letter Size, 20 Lb. Density, 96 Bright White, Acid Free, 2 Reams Pack, 1000 Total Sheets (513099-2 Ream Multipack) Bright white paper provides better contrast Acid free - will not yellow or crumble over time 20 lb