Wondering what size swim nappy your baby needs? Learn how adjustable reusable swim nappies provide the perfect fit from first splash to toddler years.
One of the most common questions parents ask before swimming lessons is:
“What size swim nappy should my baby wear?”
Here’s a simple guide to finding the perfect fit for your little swimmer.
🌿 Why Fit Matters
A swim nappy’s job is to keep accidents contained — and that only works with a snug, secure fit. Too loose and leaks can escape, too tight and your baby will be uncomfortable.
🌿 Our Swim Nappy Sizing
Our Reusable Swim Nappies are designed with adjustable snaps, so one nappy can grow with your child.
-
Smallest setting: Fits most babies from around 4kg.
-
Adjustable snaps: Allow you to customise the fit as baby grows.
-
One size, lasting years: Most families use the same swim nappy from baby’s first splash through toddler swimming lessons.
🌿 How to Check the Fit
-
The nappy should sit snugly around the waist and legs without leaving deep marks.
-
Adjust the snaps so there are no gaps, especially around the legs.
-
You don’t need extra absorbent inserts — swim nappies are designed to catch solids only.
🌿 How Many Swim Nappies Do I Need?
Most families find 2–3 swim nappies is enough. That way, you’ll always have a clean one ready while the other dries.
🌱 The Bottom Line
Swim nappy sizing doesn’t need to be complicated. Thanks to adjustable snaps, one reusable swim nappy will see your baby through years of fun in the water.
Browse our full range of Swim Nappies to find a print you’ll both love.