This item is just the baby set.  The actual chair is not included.

The Tripp Trapp Baby Set is made specifically for the Tripp Trapp from STOKKE. It made from the environmentally-friendly plastic material that is recyclable and safe for children. The Baby Set includes a seating rail and a baby back plate. It can easily be attached to the Tripp Trapp highchair to provide additional support and stability as well as allowing a baby as young as 6 months old to join the family meal at the dining table. The Baby Set provides more comfort and support which encourages the child to interact more with the family. Dishwasher safe.