If you have a leak here or there, this happens but if it`s happening every single day, there is either:

1. An absorbency issue (not enough boosters) or 2. a fit issue, meaning a gap somewhere (this happens within the first hour of wear) or 3. the cover itself has been damaged (in this case you usually see wetness on the outside of the cover). This occurs due to high temperature during washing or direct sun drying.

A cover itself does not leak, unless it`s damaged. The nappy is the foundation of the system and determines whether or not leaks occur. When a nappy gets too wet, it finds a way out!

Checklist
1. Dawn patrol mini`s and flats have 1 booster added from 3 weeks old. Add a 2nd booster if needed.
2. A flat can take up to 3 boosters. Add another booster.
3. No nappy sticking out of the cover. The clothes will suck out the moisture.
4. Cover and nappy are on snug- no gaps around the legs or waist.
5. No clothes tucked into nappy or cover.
6. Siesta night nappies - the long insert must be folded in 3. Inserts are pulled a bit forward for boys and directly under his bits. Add a booster if there are no dry patches. You will have to boost during winter.
7. Flats - 2 for a night stretch of 5- 12 hours. Add a booster if very saturated.
8. No baby grows over the crotch of fleece covers.
9. Nappies must be washed once before use.
10. Snappit Pro nappies: If the leak happens within an hour/when sleeping on a side, there is probably just a gap. Close the gap by pushing the nappy into the panty line.
11. Boys - physically point the boys bits vertically down with the back of your hand when putting it on. This is very important with a snap in style nappy.

Solutions
Leaking day nappies
If leaking is an issue after 2 - 3 hours day time, then the nappy usually does not have enough absorbency and extra layers need to be added to distribute the wetness. Boosters are the answer. Add 1 - 2 in the nappy cover. Babies wee more in Winter. The first morning nappy under 6 months old needs another booster.

Leaking night nappies
Expect a damp nappy in the morning (all layers will be soaked through to the cover) however if it is soaking wet or leaking, with no dry patches, add another  boosters in the cover. You do not need to be changing the nappy at night from 3 months old.

Bottle fed older toddlers:  Input = output. Regardless of the type of nappy, it can only handle so much. If nappies are leaking and there are still alot of bottles / a lot being taken in at night, consider dropping the volume in the bottle by 10ml per bottle, per night until baby can manage a smaller amount. This method works very well if done over a few weeks.

Tummy / side sleepers
If the front of the nappy is very wet / leaking, add a booster lengthways at the top of the night nappy to give extra layers upfront.