DS is very big (10kg at 5.5 months) with huge thighs and tummy, like a little sumo wrestler. 
He has allergies, so will poo many, many times a day after a reaction. I'm finding that his nappies are exploding up the back every time he poos and it's driving me crazy.
He was in size 4 Bambo but they were so low he had a builders bum at the back (poor chubby boy) so I've tried size 5 Naty, which are high enough but now they're too big and are leaking around the thigh.
Any suggestions? I'm having to scrub so many clothes each day.