The wooden stair high chair 'Sit Up Flex' grows with you and offers your child ergonomic, safe and adapted seating comfort from an early age to adolescence with a long life and durability. Regardless of table height and age, your protégé can sit anywhere with the transformation artist and actively participate in family life during meals. For small children, it starts safely at the highest level with a storage bracket and belt system. After simply removing the bracket and belt system, it gradually grows - supported by the height-adjustable and removable seat or footboard - into a youth chair. Matching accessories, such as a dining board or seat reducer, are available separately.