Sta-Wet Premiere Painters Palette - The ultimate palette for artists. No more wasted paint... Mastersons patented process 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 unique sponge and special permeable palette paper provide the paint with a constant source of moisture. Paints will not dry out. Each palette contains: Five sheets of Sta-Wet Acrylic Palette Paper, One Cellulose Sponge, Injection Molded Palette Tray and Lid, and Complete Instructions for Preparation and Use. Palette measures 16x12x1-3/4 inches.