The Fisher-Price Deluxe Auto Rock 'n Play Sleeper is a dream come true for new parents. This inclined sleeper gently rocks on its own, with adjustable speed, soothing music and vibrations, so your baby can settle down for sweet dreams all naptime or nighttime long. the extra-soft fabrics, plush head support and newborn body insert help keep your little snoozer cozy, and they're machine-washable too! Where development comes into play; Sensory: Engage and soothe your baby's developing senses with a variety of soft textures, gentle motions and music. Security & Happiness: the sleeper's extra-cozy fabrics, calming vibrations, and gentle rocking motion help soothe your baby and can become part of the nap or bedtime routine, creating a sense of security for your little one. Use only with an infant who is unable to roll over or pull up on the sides, whichever comes first.