X-Large (12-18kgs)

Toddler Nappies — Size 5 (12-18kg)

Once your baby moves into the 12-18kg range, they're usually an active, mobile toddler — crawling, walking, and testing every part of the house. Toddler nappies at this stage need to keep up with that movement, not just absorb what they're designed for. Walker Eco Nappies are built with an elasticated waistband for a snug, secure fit through squats, crawls, and full toddler-speed running, plus wetness indicators and skin-soothing aloe and vitamin E

X-Large (12-18kgs)
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  • Walker Eco Nappies Size 5 (13-18kg)
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    Walker Eco Nappies Size 5 (13-18kg)

    Walker Eco Nappies Size 5 (13-18kg)
    $16.95
  • Baby Nappies Size 6 (12-24 Kg)

    Baby Nappies Size 6 (12-24 Kg)

    Baby Nappies Size 6 (12-24 Kg)
    $24.95

Choosing the right nappy size

Weight is the starting point, but it's not the whole picture. Your toddler's mobility level, body shape, and whether they're a heavy overnight wetter all factor into getting the fit right. Size 5 (12-18kg) suits both toddlers who are already walking and those still primarily crawling, so don't feel locked into switching sizes the moment your toddler hits a new mobility milestone.

Thinking ahead to toilet training?

Many parents start considering toilet training somewhere in this weight range, though readiness varies hugely by child. If you're starting to explore that transition, our Potties & Toilet Trainers collection covers the next step, while pull-up style training nappies can be a helpful bridge for toddlers who aren't quite ready to go without.

Free delivery is included on all orders over $99, with fast dispatch across Australia.

FAQs

What size nappy does a 12-18kg toddler need?
Most brands classify 12-18kg as Size 5 or "X-Large," though it's worth checking your specific brand's sizing chart, since fit can vary slightly between manufacturers.

How do I know if it's time to size up?
Signs include red marks from a tight waistband or leg cuffs, frequent leaks, or a nappy that no longer fully covers your toddler comfortably — weight alone isn't always the deciding factor.

When should toddlers start toilet training?
Readiness varies widely by child, but many parents begin exploring toilet training somewhere between 18 months and 3 years, based on signs like showing interest, staying dry for longer stretches, or being able to follow simple instructions.

Are eco nappies as absorbent as standard ones?
Quality eco nappies, including Marquise's range, are designed to match standard absorbency while using more sustainable materials — worth checking specific overnight absorbency ratings if that's a priority for your toddler