1500 Total sheets (500 sheets per ream, case of 3 reams), 8.5" X 11" letter size, 20 lb. Density, 92 brightness Moisture and curl resistant, excellent for long-term filing and important papers Acid free will not yellow or crumble over time. 99.99% Jam-free Colorlok technology - blacks are up to 60% bolder, colors up to 30% more vivid, paper dries up to 3 times faster to prevent smudges Made in USA. Sustainable forestry initiative certified, contributes toward satisfying credit mr1 under leed