Polyester/Plastic Four velour race cars circle below a decorative blue ring Mobile plays nursery songs for 20 minutes, has an on/off switch and volume control Plays Twinkle, Twinkle Little Star, Brahms Lullaby, and Rock-a-Bye-Baby Provides great visual and auditory stimulation for baby Requires 3 AAA batteries not included Create a fun-filled adventurous sleep space for your little one with this adorable blue ring musical crib mobile. It features four velour plush race cars. Each car is 5” long X 2 ½” tall X 2 ¾”” wide. Each car is embellished with wide black felt tires with spoked wheels in white embroidered threads. The windows are made of white velour and the scrunchie, which covers the mobile arm, is cream velour. There are two blue cars, one gray car, and one taupe color car. Two black and white checkered flags decorate the long-playing battery-powered music box which plays nursery songs for 20 minutes, has an on/off switch, and volume control. Requires 3 AAA batteries, not included.