100 Brown Kraft Fiber 80# Cover Paper Sheets - 4" X 9" (4X9 Inches) #10 Envelope Insert Size - Rich Earthy Color with Natural Fibers - 80lb/pound Cardstock - Smooth Finish 80 lb/pound CARDSTOCK Cover is 3 times as thick as copy paper. 216 gsm Calipers .011 inches Darker specks of PULP FIBERS throughout - like fibrous handmade - Monitor's color displays can vary The SURFACE is smooth, making this paper good for invitation & announcement cards ARCHIVE FRIENDLY Acid-Free and Lignin Free Recycled paper - 30% post consumer waste - keepsakes THOUSANDS of HAPPY CUSTOMERS have appreciated the quality paper and good service we provide.