Tippitoes Dotti Highchair Specification: High Chair. The Tippitoes 'Dotti' High Chair utilises a lightweight but sturdy design giving it an economical and stylish look that would grace any kitchen. The Highchair is suitable for Baby from the age of 6 months to around 3 years. With a specially designed locking system, the chair folds away for easy storage. Featuring a wipe clean PVC seat with an integral safety harness and removable inner tray, which is food safe.