I received the Fisher-Price Rainforest Jumper as a baby gift when my baby was 3 months old. I decided that he'd be ready for it when he was just over 4 months old and set it up. Set-up was a breeze. I really like that there are 3 adjustable settings on this jumper so it "grows with your baby" as they grow taller. I also like the bright colors & rainforest pattern - i think the bright colors stimulate babies, and it's very cute! I think the overall design is great - lots for baby to do (leaves overhead, 3 different toy bars, lights & sound). One of my favorite functions on this jumper is the...