I bought this for my son when he was about 11 months old because he really enjoyed the Twinkle Twinkle Elmo soft book that his grandma had bought for him.  He loves "finding" Elmo in the various scenes.  I just wish I had bought it for him when he was a little bit younger so we could have gotten more use out of it.  At 15 months now, he seems to be losing interest a bit.