My daughter is one of those kids who can soak a diaper at night like it's nothing. She has been this way since she was born. Now that she is 4, we didn't know what to do because she was leaking through any diaper we used. Recently we have started to use the Huggies Overnights for her, hoping for a miracle. She wears the size 5 ones and they have been wonderful!!! These diapers come in size 3, 4, or 5. They have an "All Night Protection Zone", which is an area of the diaper that is extra absorbent so that all of the liquid goes there. The diapers are held together with velcro like tabs. I have to admit that sometimes these tabs can be problematic because they seem a little flimsy to me. This is the only design flaw that I have discovered for these diapers. The diapers are cute in that they have little designs on them. THe number of night leaks has dramatically decreased in our house, which not only keeps my daughter happy and comfortable, but also makes mommy and daddy happy!!!