I've been using flexitots with a motherease airflow wrap for my ds for over a year now with no problems until recently. They've started to leak, mostly around the leg holes. When I change him the nappy is absolutely soaking and heavy, so I know it's absorbing to its limit. He's 22 months, 30lb, quite tall, but as far as I can see the nappies still fit him fine. The wraps are fairly new and fit ok too. He hasn't increased his fluid intake, but suddenly the nappies just aren't coping - used to be able to go at least 3-4 hours if no poo, but now he can barely last 2 without a leak. Does anyone have any ideas?