HP Papers is sourced from renewable forest resources and has achieved production with 0% deforestation in North America. Each ream is wrapped in a polyurethane coated paper wrapper to protect the cut sheets from moisture damageSheet size – 8.5 x 11; Thickness – 20 pounds; Brightness – 92 bright whiteHP Copy&Print20 20 pounds printer paper is Forest Stewardship Council (FSC) certified and contributes toward satisfying credit MR1 under LEED (Leadership in Energy and Environmental Design)All HP Papers provide premium performance on HP equipment, as well as on all other printer and copier equipment; 100% satisfaction guaranteed; ColorLok technology provides more vivid colors, bolder blacks and faster dryingSuperior quality, reliability, and dependability for high-volume printing at home, at school and in the office; HP Copy&Print20 print and copy paper prevents yellowing over time to ensure a long-lasting appearance for added archival quality