Sides are not absorbent (as is the case with most, if not all nappies) so can be a minor issue if you have a side or tummy sleeper. Does appear to hold quite a lot of liquid although I do change my son once during the night as it does look rather uncomfortable the Fuller it gets. He's 2.5 and potty trained (but not night trained) and we've had a few leaks but I think that's down to fit rather than absorbency if that makes sense. Cheaper than Huggies though; and you get more in the pack.
Wish Amazon would stop using so much bloody packaging though!