ok well DS was wearing infant nappies in the hospital coz my mum bought them for me and they didnt have small packs of nb nappies when she went to the shop but they were 3-6kg ones i didnt even finish the first box of NB nappies coz DS was out peeing them and was in the infant size for not even half a box he was in crawler from about 5kgs then changed to toddler nappies when he was 8kg so 2 kg off the start of the size im glad im now using cloth he just loved to out pee disposibles lets hope that doesnt happen to u