Suction bowls and plates are not very effective on Stokke high chairs because the tray surface is textured, which prevents a lasting vacuum from forming. The suction only works on smooth surfaces because it requires the suction base of the bowl to make contact with the surface without any air getting in between. Unfortunately, it is impossible to achieve lasting suction on a textured surface like the Stokke tray, even with strong suction products. Although some brands claim their suction products work on textured surfaces, this is technically impossible for more than a few minutes. Luckily, we offer a special tray sticker that can improve suction on textured trays, providing a solution to the problem.