UNIQUE 100 PreCut ACEO ATC Blank Cards (Cardstock) Color – WHITE from Kimmeric Studio Weight: Quality 110 lb. smooth cover stock. Like a business card weight. Card Size: 2-1/2″ x 3-1/2″. Card Color: White Acid and Lignin Free from a Smoke Free environment. This is a smooth 110 lb cardstock that is a classic bright white. These are ready for all kinds of applications, but are not a watercolor paper. You can use some water, but a lot is not recommended. If your cards curl at all from water, after they are dry you can press them in a book to be perfectly flat. Great for so many creative card ideas. This is a pack of 100. Make your life EASY and buy your ACEO ATC cards PreCut! These are cut professionally and are an exact and consistent size. Information on ACEO: Art Cards Editions and Originals (ACEO) were once only traded between artists as Artists Trading Cards (ATC). These wonderful little works of art are fun for artists to create and affordable to everyone. You can display them yourself as wall art or create a wonderful coffee table book with all original artwork. Search ACEO on eBay to see all kinds of these cards from many creative artists. The cards measure 2-1/2″ x 3-1/2″. Other than that pretty much anything goes. Affordable-Collectable-Tradable. A great gift for someone. I do combine shipping.