Watercolor Heavyweight Acid-Free Cold Press Paper - 5.5" x 8.5" Pad of 12 Sheets, Strathmore 400 Series - Ideal for Plein Air Painting, White Size: 8.5" x 5.5" - ideal for taking outdoors for plein air painting Heavyweight Advanced Student Grade Paper Acid free Designed to stand up to a variety of watercolor techniques, these quality pads are just what you need for your next painting project.