Amazon.com : Infant Insert, Compatible with 4Moms RockaRoo and MamaRoo, Includes 3 Strap Pad, Breathable Mesh Fabric, Plush Soft Newborn Insert with Head and Body Support : Baby
4moms Mamaroo (infant insert available) — Block Island Babysitters
A 4moms Mamaroo review — an in-depth look - Fathercraft