Perfect size for those small projects or the classroom! 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 unique sponge and special permeable palette paper provide the paint with a constant source of moisture. Paints will not dry out. Dimensions: 8.5" x 7" x 1" Each palette contains: Five sheets of "Sta-Wet" acrylic palette paper Cellulose Sponge Palette Tray and Lid Complete instructions for preparation and use.