This high back booster seat is suitable from 9 months to 1112 years approx 9kg20lbs to 36kg79lbs it has a height adjustable head support with side impact protection the 5 point harness is tightened with individual tensionners for added safety it has a quick release buckle and chest and buckle pads for comfort the cover is removable and hand washable features suitable for groups 1 3 from 9 36 kgs around 9 months 11 years fixes in the car with the use of the 3 point seat belt