This cushion was designed for Ikea Antilop highchair, It will provide a more comfortable and safe sitting for your baby. You can take it with you everywhere you go. For this cushion you don't need an insert from Ikea. Material - waterproof polyester Filler - polyester . You can add a storage pocket for IKEA ANTILOP highchair. Just choose the following option SET OF 3 consits of : Cushion, Storage pocket, Wooden footrest support for Ikea antilop highchair Care label: Mashine washable.Just do it with delicate option. Contact me for custom colors and fabrics,please