The Baby Einstein Around-We-Grow 4-in-1 Discovery Center is a best-selling, multisensory activity center & stationary walker that transforms to meet all of baby’s play needs from 6 months to 3 years 4 modes of play & learning: height-adjustable, sit-in stationary walker; walk-around sensory table with 15+ toys and activities; toddler art table; 5 detachable floor play stations Sit-in walker features 3 heights for a perfect fit and travels 360 degrees around the table while remaining stationary; Made for co-play as table fits multiple children 15+ toys & activities to introduce STEAM learning & build fine motor & cause-effect skills, including light-up piano that teaches colors & animals names in English, French, & Spanish Unisex design; Surfaces wipe clean; Assembled dimensions: 22.9 x 53.5 x 23.3 inches; Requires 3 AA batteries (not included)