All pieces are constructed of 3/16" thick anodized aluminum material with a matte anodized finish. The inbox itself is carved out of one large piece of aluminum ensuring a long lasting finish. Laser-etched cork is used on the underside to reduce sliding and provide contrast to the aluminum material. With an simple, yet functional design, the designer aluminum desk set is great for any modern office design. We are confident you can fit this beautiful set of desk accessories into any style.