The Masterson Sta-Wet Super Pro Palette is a multi-purpose palette for acrylics, watercolors and oils. The Super Pro Palette features 32 separate wells for holding paints and three divided mixing areas to keep color ranges separate. The inverted lid can be used as an additional, larger mixing area. The lid will keep your paints protected and clean between painting sessions. Each palette contains five sheets of Sta-Wet Acrylic Palette Paper, one Sta-Wet Sponge, Palette Tray, Lid, eight rubber bumpers for stability and surface traction and Complete instructions for preparation and use. Packs of 30 refill sheets and sponge refill packs are available. For use with acrylics, use the Masterson Sta-Wet Palette Paper and Sponge. Masterson's Sta-Wet system keeps acrylics and other water-based paints moist on the open palette for hours. Once the lid is closed, the paints will stay in workable condition for days, even weeks. A wet sponge and special permeable palette paper provide the paint with a constant source of moisture. Paints will not dry out. Please be sure to attach the included rubber bumpers to the underside of your lid and base within the designated circular areas. The bumpers will provide a sturdy mixing surface. For use with watercolors, remove the paper and sponge, and use the wells and mixing areas for paint storage and mixing. For use with oils, remove the Sta-Wet Palette Paper and Sponge. Insert a palette surface for mixing oils; wood, glass, paper, plastic (not included). Dimensions: 11-1/2" x 15-1/2" x 1-3/4"