This box is made from durable, scratch-resistant polypropylene plastic. The outside of the box is tough and textures and the smooth inside surface allows easy cleaning. Trays are transparent gray and made from X-T tripolymer, which is resistant to stains and oils. The double-tray compartments are sized to accommodate brushes and paint tubes. ArtBin tray boxes are made in the USA. Box measures 14.5 x 8 x 7 inches.