Polyester/Plastic Cute forest animals underneath a canopy of leaves Gently soothe your baby to sleep while turning and playing the music of Brahms' Lullaby, Twinkle Twinkle Little Star, and Rock-A_Bye Baby This battery-operated mobile plays for 20 minutes, has an on/off switch and volume control Safely fits most standard and convertible cribs Contains a coordinated brown cover for the mobile arm Our cute forest animals underneath a canopy of leaves gently soothe your baby to sleep while turning and playing the music of Brahms' Lullaby, Twinkle Twinkle Little Star, and Rock-A_Bye Baby. Contains a coordinated brown cover for the mobile arm, and safely fits most standard and convertible cribs. This battery operated mobile plays for 20 minutes, has an on/off switch and volume control. Requires 3 AAA batteries, not included. Easy to follow assembly instructions are included.