Tripp Trapp (formerly known as KinderZeat in North America) is an adjustable wooden high chair for children. It was developed by the Norwegian furniture designer Peter Opsvik for the company Stokke AS. Launched in 1972, over time it became a best-selling item. Peter Opsvik is also the designer, in cooperation with Hans Christian Mengshoel, of the original Balans kneeling chair.