These refill sheets are for use with the Sta-Wet Handy Palette. Easily refill your palette and ensure that your paints are fresh for the duration of your project, whether it takes days or weeks! Specially designed for use with acrylics and water-based paints, this palette paper keeps paints moist for days—even weeks! For use with the Sta-Wet Handy Palette, each sheet works with a sponge to provide the ideal moist surface for mixing paints and mediums.