I use a mini booster in all of my nappies in the morn as DD has so much more wee to give in the am. Then if we are out for a while i'll use the mini booster plus a longer booster from one of my pockets. I find all of my nappies only last 2-3 hours max (2-2.5 without a mini booster, 3 and abit with one) on DD otherwise the start to feel wet around the legs.