We too used the peg perego capsule that goes with the skate pram. It says it can be used up to 9kgs but I found that DS was only around 8kg if that, and only 4 months old when the straps were just too tight to fit anymore Maybe he was just all chub though and no length! Was a shame because we really liked it and had hoped to get more use out of it. It's lovely and padded, clicks onto the pram easily and has a sun protector hood thingy. The handle clicks into 3 positions - one to carry, one for the car and one to steady it on the floor. One con though is that it is a bit heavy, but really that is pretty irrelevant if you are just taking it from car to pram or car to house...