4Moms - Newborn Insert Only (Grey/Plush)It'S All About Our Base. The Rockaroo Baby RockerS Unique Base Design Creates A Rhythmic Front To Back Motion Baby Loves. Unlike Other Rockers, WeVe Moved The MotionS Pivot Point From Overhead To Under The Seat, Creating A Super Compact Footprint. Oh, And By The Way, You DonT Need A Parent To Power It. ItS Automated. Reversible, Plush Fabric Keeps Baby Cozy Machine Washable For Use From Birth Until Baby No Longer Prefers It Compatible With Mamaroo