I’ve loved Huggies Overnights from the first time we used them.  But recently we started getting some leaks.  Even though the package says that the size 3 is for “16-25 lb” babies, and Cameron was only 18lbs and change a month ago at his 9 month check up, I decided to move up to size 4’s (22-37lbs).  And now, no more leaks!  I plan to move up to size 4 for his regular diaper as soon as I run out of size 3’s.