Insert form: designed taking into account the anatomical features of newborns & children of the first months of life I use only natural 100% cotton, which does not cause allergies. You can wash it in the washing machine on a delicate mode at 30 degrees. It is better to dry on a flat surface This insert fits perfectly with all 4moms infant seats: mamaRoo 2.0, 3.0, 4.0; rockaRoo bounceRoo 3 Balls for hanging mobile for MamaRoo 2.0, 3.0, 4.0 Also perfect fits the new model 2022 mamaRoo multi-motion For the new model select the option you need in the options -Mamaroo balls -Insert M2022! -Insert+balls M2022! Insert For Mamaroo, Rockaroo Infant Seat, Set 4Moms, 4Moms Infant Seat, & Balls Mamaroo 2022
