The Masterson Artist Palette Seal keeps paints fresh for up to weeks at a time. Originally developed in 1973, this product has been tested and cherished by artists for years. Safely holds any 12in x 16in paint palette for storage, transportation, and paint preservation. Great for artists at all levels. The Masterson Palette Seal safely holds any type of paint palette between sessions. Place palette (not included) in the airtight Masterson Palette Seal and snap on the lid. For oil paint, place your palette into the tray and snap on the airtight lid. The airtight container slows the oxidation of…