The leaks are usually around the back of the leg but last time they were over the bum. I had a thought though, we have a basix and a couture and the couture came with the booster that snaps in and then another mini booster that sits on top of the one that snaps in. I was told i dont need to us the mini booster so i have just left it aside thinking ill use it when he is wearing it overnight etc. Do i need to use the extra booster? I was looking at the snap in boosters today and realised that one is long and skinny and the other one is shorter and fatter. Now i cant remember which one was leaking and cant remember which one goes with which? Does anyone know which one belongs with which nappy? I think the long skinny one was leaking so maybe that is the booster for the couture?