Most people who start with cloth diapers begin during the day. Nights come a little later in the decision — because they feel more uncertain. What happens over eleven hours? Does it leak? Does your child wake up soaked through?
The questions are fair, and the answers are actually fairly simple. This guide goes through how a night diaper works, how to put together a night combination, and what to do if it starts to leak.
One thing to know right away: for some children, a regular cloth diaper does the job perfectly well at night, with a second insert folded lengthways where the wee mostly lands. Try that first — a dedicated night diaper is the step up for when that isn't enough.
What is a night diaper — and how does it differ from a regular cloth diaper?
A night diaper is an extra absorbent layer — an inner diaper designed for long wear. It's thicker and soaks up more than a regular diaper insert, and it's made to get through a whole night's sleep without needing to be changed.
There's one important thing to know: the night diaper has no waterproof layer of its own. It's always used together with a cover that provides the waterproof layer on the outside.
So you need two parts:
Night diaper (the absorbent layer) + Cover (waterproof outer) = a complete night combination
It's this system that keeps things watertight all night.
The night diaper fits 5–17 kg
The night diaper is one size — it adjusts with snaps and follows your child from around 3–4 months of age to the end of the diaper period. You don't need to buy a new size as your child grows; you adjust the fit with the snaps at the front.
The night combination — night diaper and cover together
You don't need a new cover for the night. You put on the night diaper, and then a waterproof cover over the top. That's all.
But one thing to know: the night diaper is thicker than a regular insert, so it needs a roomier cover to sit well. The Cover Comfort has that extra room. A roomier pocket diaper works too — take out the regular insert and use the pocket diaper as the outer cover. The Slim model, on the other hand, is too snug and doesn't work as well together with the night diaper.
If you already have one of the roomier covers at home, that's all you need — you don't have to buy an extra one for the night.
Fit at night
The night diaper is soft and stretchy, and it's easy to get a good fit inside the cover. Night-time leaks are nearly always down to the absorbency running out — not the fit. But it's still worth keeping an eye on a couple of things.
Make sure no fabric from the night diaper sticks out along the leg openings or along the back. If it does, the wee is led out along the fabric and out of the diaper. The leg openings on the cover should sit along the inside of the thigh, and you should be able to fit two fingers into the waist.
If you need help with fit in general — this guide goes through it step by step.
If the night diaper starts to leak
The night diaper has worked fine — and then, without you really having changed anything, it starts to leak. The most common reason is that your child has got older and wees more per stretch. The absorbency that was enough three months ago isn't enough any more.
The solution is more absorbency, not a new diaper.
The booster tip: Take a thin Insert Basic and fold it lengthways. Place it in the diaper where the wee lands first — that gives extra absorbency exactly where it's needed, without making the whole diaper unnecessarily thick.
If you've added a booster but it still leaks — check:
- The fit (see the section above)
- The wash routine — fabric softener and fragrance residue gradually build up in the fabric and reduce absorbency. Try running an extra rinse cycle, and check that you're not using any fabric softener at all
Washing the night diaper
The wash routine is the same as for all cloth diapers:
- 60 °C, long program
- Pre-wash + extra rinse
- No fabric softener, no bleach
One practical detail: the night diaper is thick and soaks up a lot of water in the machine. Make sure the machine isn't overfilled — the fabric needs to move freely so the detergent reaches all the way through properly.
Air-dry. Inserts and the night diaper can be hung in the sun — it's an old trick against stains. The cover dries best indoors.
You'll find more on washing in our washing guide for cloth diapers.
How many night diapers do I need?
Your child has one night diaper per night — so you don't need as many as day diapers. As a guide:
- If you wash every other day: 3–4 night diapers is plenty
- If you wash every third day: 5–6 night diapers gives a good margin
If you need a fuller run-through of how often diapers are actually changed over the course of the day — see our guide on how often to change a diaper.
Sleep routine and night changes — when it makes sense to change
For most children the night diaper is a whole-night diaper — you put it on at bedtime and change it in the morning. That's the whole point of the system.
But there are two situations where a night change can be worthwhile:
1. Early in the diaper period — when nights are short
For really small babies (under around 4–5 months) who feed often, nights are rarely eleven hours long anyway. In that case you may already be up changing a diaper at a feed. Use that moment — a simple diaper change while half-asleep is much easier than sorting out a soaked-through pyjama change at 4 in the morning.
2. During transition phases — when your child is growing
As your child gets bigger and wees more per stretch, you may notice the diaper starting to become saturated before morning. That's often the sign to move from a regular day diaper at night to a dedicated night diaper, or to add a booster to the night diaper you already have. See the booster tip above.
Otherwise: leave well alone. Changing a diaper at night wakes both child and parent more than it solves — unless there's an obvious reason, wait until the morning.
Common questions about night diapers
How long can my child wear the night diaper without a change?
A correctly fitted night combination — night diaper + cover — lasts through most children's night's sleep. Exactly how long depends on your child's age, how much they wee and whether you've added extra absorbency.
Do I need a separate cover for the night?
No. The cover you use during the day — pocket diaper or cover/all-in-one — works just as well at night. You don't need to buy an extra one.
Can the night diaper be used during the day too?
Yes, but it's thick and can feel bulky when your child is moving about actively. Most people save the night diaper for nights and choose a slimmer day diaper for daytime. One exception is longer car journeys — the extra absorbency is welcome then if you want a little more margin.
How does the night diaper differ from adding extra inserts to a day diaper?
The night diaper is specifically designed for long wear — thick, absorbs a lot and holds the absorbency for a long time. Adding extra inserts to a day diaper works as a supplement (the booster method), but it's rarely quite as effective as starting from a night diaper when your child sleeps for a long time.
Is the night diaper suitable from birth?
The night diaper fits from 5 kg upwards, which for most children is around 2–4 months of age. Below that it can be too big and give a leaky fit — a regular cover with an insert works better for the smallest ones.
Get started with the night diaper
The night diaper is combined with the cover you already have — you don't need a new outer cover. Start with the night combination and adjust with the booster tip if it's needed further down the line.
Need more cloth diapers first? Our buying guide for cloth diapers goes through which model suits your everyday life.
By Emelie, Time Ahead Sweden
