DS is 19 months old and has outgrown his britax first class seat. We have been looking at these booster seats that cover stages 1-3 so 9 months to 11 years as he still needs the straps that crossover on the front however despite looking at several different brands none of the straps are long enough to be able to clip them in place. He is still to smal for a seat that just uses the belt in the car. We bought this one today but the straps will not do up \link{http://www.argos.co.uk/static/Product/partNumber/3754494/Trail/C%24cip%3D42358.Toys%2Band%2Bbaby%3EC%24cip%3D42368.Baby%2Band%2Bnursery%2Bequipment%3EC%24cip%3D42373.Baby%2Band%2Btoddler%2Bcar%2Bseats.htm}