For the last 2 months my son has started leaking through his nappies at night - we have been using pampers active fit since he was little and no probs. He is about 22lbs, We are on size 4 and now tried 4+ and he leaks through both at night and sometimes in the day on the waistband. Cloth nappies are not an option for us so can anyone suggest another brand or what they did when they had a similar problem? Many thanks