The group I Optiafix seat features a permanently integrated isofix base, providing you with ease of use and peace of mind of the correct installation at all times. The Optiafix features the HERO belt system, innovative side impact protection and RECARO SMARTfit elements for ease of use. Hero harness system: shoulder paddings, belts and headrest form one unit. No slipping or twisting of the shoulder pads and belts. Six position height adjustable headrest which can be easily adjusted as your child grows. Car seat features: Car seat group 1. Suitable for children 9 months to 4 years. Suitable for children from 9kg to 18kg. For use with 5 point. ISOFIX compatible. Forward facing. Side impact protection. 5 point harness. Harness sleeves and quick release buckle. Multi-recline - 3 recline positions. Adjustable head support. Padded seat. General information: Size H75, W44, D72cm. This seat does not convert to a booster seat. Removable washable cover. Weight 14.3kg. Manufacturers 2 year guarantee.