The Comfi Astra is a Convertible Booster Seat. It uses the in-built harness from approximately 6 months through to 4 years old. After this, it converts into a Booster Seat with the vehicle’s lap & sash seatbelt once the child reaches the middle marker, which is outgrown at approximately 8 years old. Its slimmer than it’s predecessor at 47.5cm, and features new innovations in safety, comfort and ergonomics Features converts from carseat to booster seat Air Cocoon Technology Redesigned seat base Innate anti-submarine design Available in 3 fresh colours High backrest Large side wings Recline position 5 Shoulder slot heights Easy install belt path Padded seat inserts SafeGrip Belt Clamp Included Specifications Width (Base) – 33cm Width (Sidewings) – 47.5cm Height (Top to Bottom) – 78cm Depth (Seat Base) – 43cm warranty 12 months warranty