I found pampers the best. I think wanda is right about the pull ups after they hit 2 years of age.  One tip is that they might need a bigger size. I used to think that a bigger size was too big for my tiny daughter but shortly realized from wet beds that she needed a bigger size.  And sure enough leakage stopped soon after.

InshAllah I hope that helps you.

Maryum : Umm Hasan bint Abdullah Alshabrawishi