The Masterson Sta-Wet Premier Palette is ideal for projects that require maximum palette surface! This is the largest of the Sta-Wet Palettes. No more wasted paint... Masterson's 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 wet sponge and special permeable palette paper provide the paint with a constant source of moisture. Paints will not dry out. The air-tight container can also be used to store oil paints (oil palette paper not included). Each palette contains five sheets of "Sta-Wet" acrylic palette paper, cellulose sponge, palette tray and lid and complete instructions for preparation and use. Workable Area: 16" x 12".