Wondering whether reusable swim nappies can hold poo? A swim nappy is designed to help contain solids during swimming when it fits snugly around your child’s waist and legs. It is not designed to absorb urine.
How reusable swim nappies work
Sarah-Jane Collection reusable swim nappies use a lightweight PUL outer and a soft mesh lining. They are made for use in water and do not work like an everyday absorbent nappy: they do not absorb urine or pool water and are not intended to prevent urine from entering the water.
The close fit around the waist and legs helps contain solid waste. Check the fit before each swim and follow the pool or swim school’s nappy requirements.
What to look for in the fit
- The waist sits securely without digging in.
- The leg openings sit snugly against the skin, with no obvious gaps.
- Your child can move comfortably.
A fit that is too loose may not contain solids effectively. If the nappy leaves deep marks or restricts movement, adjust the snaps or check whether another size gives a better fit. For children in the overlapping 10–12 kg size range, choose based on the fit around the waist, legs and rise—not on extra growing room alone.
Reusable swim nappies do not replace an absorbent nappy outside the water. Change your child into their usual nappy after swimming and follow the care instructions for your product.
After swimming
Remove solids promptly and dispose of them appropriately. Rinse the swim nappy after use, then follow the product’s washing and drying instructions.
Choosing and using a reusable swim nappy
Compare the swim nappy size and fit guide before choosing a size. You can also read our swim nappy FAQs and check your pool or swim school’s requirements before attending.