Polyester/Plastic Plays 3 nursery songs (Brahms Lullaby, Twinkle Twinkle Little Star and Rock a Bye Baby) for 20 minutes Provides visual and auditory stimulation and promotes brain development for baby as animals rotate around with music Has volume control and on/off switch for ease of use Helps baby self soothe and helps promote a good night sleep All hardware included to easily attach to most standard cribs. Coordinates with the Woodland Forest nursery collection by Lambs & Ivy. Two soft furry charcoal gray bears with white diamond embroidery, one minky tan colored fox with an embroidered tail and one little wise owl with a minky body with gray wings and an embroidered tummy circle around this charming musical mobile. A canopy of four leaves add to the charm. The gray velour scrunchie covers the mobile arm and the music box sticker has two tree branches. This battery operated musical mobile plays nursery songs for 20 minutes, has an on/off switch and volume control. It plays Brahms Lullaby, Twinkle Twinkle Little Star and Rock a Bye Baby. Requires 3 AAA batteries not included.