Britax First Class SI Ultra Car Seat-Black 2008 (0-4yrs) Specification.. A seat designed with the comfort of your child in mind. Featuring our Ultra covers which incorporate the exciting new Comfi-Flex and Comfi-Cool technologies. Features Suitable from birth - 18Kgs (4years approx) A great choice if you don't need an infant carrier that connects to a pushchair Deep softly padded side wings for optimum side impact protection Ideal if your child has outgrown an infant carrier but can't yet travel facing forward Unique pitch control system reduces forward movement in a crash and so better protects your child When rear facing the extended recline position and newborn insert create a more natural sleeping position 5 forward facing recline positions User friendly side elastics 2 seat belt routing options (where forward facing) allow the seat to be used in an exceptionally wide range of vehicles Specially designed spring loaded belt locking mechanism allows easy installation, even in 3 door cars The slim base enables a better fit in modern sculpted seats 5 point safety harness with easy one pull adjustment Removable washable covers Quick to remove washable covers for ease of cleaning and replacement The quick removable cover eliminates the need for the harness to be removed and refitted, removing any chance of error in refitting the harness which helps to ensure your child's safety Comfi-Flex system which uses layers of soft touch, breathable fabric, flexible wadding and open cell foam to create new levels of enhanced seated comfort Comfi-Cool system, which uses soft mesh, durable and breathable fabrics to create ultra dry, cool seated comfort Dimensions (LxWxH): 45 x 48.5 x 74 cm Weight: 7.9 kg