This is a 10-piece set of Alessi for Delta Airlines serving trays, specifically used for their Business Class "Delta One" service. These trays feature a distinct textured design on the bottom, often described as a hammered or water ripple pattern, and a non-slip coating on the top surface to keep meal service stable during flight. Product Details Brand/Designer: Alessi for Delta Air Lines. Material: Plastic with a textured, non-slip finish. Measurements: 2/3 size version ( approximately 10.75 inches by 7.5)