The Ikea insert is great, a kinda blowup cushion which fits around back and sides of highchair to make seat bit smaller with holes for restraint straps. As Munchkin's tall and slender without it she just slid around and couldn't reach the table. not very expensive either and plastic so easy to wipe clean. If I figure it out I'll email aitch a pic of Munchkin which shows it in action so to speak! Eli