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Sposie booster pads review: do diaper doublers actually stop overnight leaks?
They turn the nappies you already buy into overnight ones, for about 36c a night.
Best for: Heavy wetters who soak through by morning — where the nappy is full, not badly fitted.
From $14.99 Check current prices at Sposie
Sposie booster pads are absorbent inserts you lay inside a normal nappy to turn it into an overnight one. They exist for one situation: your child soaks through by morning and going up a size has not fixed it. For families in exactly that situation they work, and they cost less per night than switching your whole stock to overnight nappies.
Who this is for
- Parents whose toddler leaks through overnight nappies but is not ready to move up a size
- Heavy wetters where the nappy is genuinely full by morning
- Anyone wanting to stretch daytime nappies through the night without buying a second brand
Pricing
| Plan | Price | What you get |
|---|---|---|
| Booster Pads, sizes N-3 | $14.99 | About 47c a pad. The pack to start with — three nights tells you whether they suit your child |
| Booster Pads, sizes N-3 | $34.99 | About 36c a pad — roughly 22% cheaper per pad, and less than three months of nightly use |
| Booster Pads, sizes 4-6 | $14.99 | Larger pad for bigger nappies |
| Booster Pads, sizes 4-6 | $38.99 | About 43c a pad |
| Super Sposie Booster Pads | $39.99 | Maximum absorbency, for children the standard pads nearly but not quite cover |
Pricing checked September 2026 on the vendor's own page. Prices change — verify before you buy.
What is good, and what is not
Good
- They solve one specific problem well: a normal nappy plus a pad gets many families through the night without a 5am change and a full bed strip.
- At about 36c a night in the big box, they cost less than replacing every nappy with an overnight version — you keep buying the nappies you already use.
- Sposie states the pads are hypoallergenic, pediatrician and dermatologist tested, and free from latex, chlorine additives, phthalates and fragrance.
- Most reviews are positive on the thing that matters: leaks stopping. Parents who tried going up a size first, and found it did not work, are the ones who report the clearest results.
Not so good
- Some reviewers report a strong smell straight out of the pack. — this is the main reason to buy the $14.99 pack first rather than the box; one night answers it.
- A few report the pad shedding lint inside the nappy. — a minority complaint, not the common experience, but it is real when it happens.
- They will not fix a leak caused by poor fit. — if the nappy leaks at the legs rather than arriving full, a different size is the answer, not a booster.
- Sizing follows nappy size bands (N-3 and 4-6). — if your child sits on the boundary, the small pack is the cheap way to confirm which band fits.
The verdict
If your child is a heavy wetter and the nappy is genuinely full by morning, this is the cheapest fix available: you keep the nappies you already buy and add a pad. Buy the $14.99 pack first — three nights tells you whether they work for your child and whether the smell bothers you — then move to the 96-pad box, where the cost drops to about 36c a night. That is less than a wet bed, less than an early morning, and less than switching every nappy you own to an overnight version.
If it is not the right fit
No single product suits everyone. If the drawbacks above rule it out for you, these are where we would look next — including options that earn us nothing:
| Option | From | Better if |
|---|---|---|
| Super Sposie | $39.99 | The same idea with more absorbency, if standard pads nearly work but not quite |
| Overnight nappies (Pampers Baby Dry, Huggies Overnites) | — | Buying one product instead of layering two — simpler, usually dearer per night |
| Going up one nappy size | Free to try | Leaks at the legs rather than a full nappy — that is a fit problem, and a booster will not solve it |
Questions people ask
How do you use them?
The pad is laid inside a normal nappy to add absorbency, turning a daytime nappy into an overnight one. You keep using the nappies you already buy.
Are they safe against a baby's skin?
Sposie states the pads are hypoallergenic, pediatrician and dermatologist tested, and free from latex, chlorine additives, phthalates and fragrance. Some reviewers do report a strong smell from the pack itself.
Which size do I need?
Two bands matching nappy sizes: N-3 and 4-6. If your child is on the boundary, the $14.99 pack is the cheap way to find out.
Should I buy the big box straight away?
Only after the small pack has worked for a few nights. Then it is worth it: about 36c a pad against roughly 47c, around 22% less.
What if the leaks continue?
Check where the nappy is leaking. If it arrives full, you need more absorbency. If it leaks at the legs while still having room, that is a fit problem and a different size is the fix.