Fisher-Price Go Baby Go Sit-to-Crawl Polar Coaster The Sit-to-Stand polar coaster offers two modes of play and grows with baby's development from sitting to crawling As baby drops one of four included balls into the friendly polar bear's hands they will make their way down the polar coaster Baby will hear a sing-along song or a ditty and other sound effects while the bear's nose lights up in time to the music At the end of the coaster the balls will spin around and collect in the baby polar bear's tummy For the crawling baby the Polar Coaster can be adjusted into a more linear configuration Encourages baby to drop balls in and crawl to the end where they are collected and do it over and over again