Frequently Asked Questions

The best way to find the right size is to go by your baby’s weight rather than their age, as every baby grows differently. Each pack clearly displays the recommended weight range on the front, making it easy to find the right fit. As a general rule, if the tabs are stretching to their limit or you’re noticing red marks around your baby’s legs or waist, it’s likely time to move up a size.

Most newborns start in a Size 1 (Newborn), which is designed for babies up to 5kg. Each size displays the recommended weight range on the pack to help you choose with confidence.

Yes - our sizes are designed with a small overlap of around 1kg so you can transition your baby gradually rather than switching abruptly. Here’s a guide to our full size range:

• Newborn - up to 5kg
• Infant - 4-7kg
• Crawler - 6-11kg
• Toddler - 10-15kg
• Walker - 13-18kg
• Junior - 16kg+

If your baby falls within an overlap, consider their build and whether the current size still fits comfortably around the legs and waist without any red marks.

Your baby’s weight is the most reliable guide - check the weight range printed on the front of each pack. Signs that it’s time to size up include the tabs straining to fasten comfortably, red marks around the legs or waist, or frequent leaks despite a good fit. When in doubt, sizing up is usually the right call.

As a general guide, newborns typically need changing every two to three hours, while older babies can usually go a little longer. Always change your baby as soon as possible after a bowel movement, regardless of how recently you last changed them. Our wetness indicator takes the guesswork out of wet nappies - it changes colour when it’s time for a change.

The wetness indicator is a small strip on the outside of the nappy that changes colour when the nappy is wet. It’s particularly handy for newborns when it can be harder to tell at a glance whether a change is needed.

Leaks are usually caused by an incorrect fit rather than the nappy itself. Check that the tabs are fastened symmetrically and snugly around the waist, and that the leg cuffs are fully pulled out and sitting flush against your baby’s skin. If everything looks right but leaks continue, it may be time to move up a size. Treasures nappies feature engineered leak protection around the legs and Grip Lock tabs to help maintain a secure, stay-in-place fit.

Nappy rash is most commonly caused by prolonged contact with moisture. Changing your baby regularly and using a nappy that draws moisture away from the skin quickly can make a big difference. Treasures nappies are independently tested for superior absorbency and are free from latex, fragrance, lotions and toxic treating agents, making them a gentle choice for delicate skin. If irritation persists, we recommend speaking with your GP or Plunket nurse.

General nappy rash is very common and usually appears as redness or irritation in the nappy area, most often caused by prolonged contact with moisture or a dirty nappy. It typically clears up within a few days with regular changes, good airflow, and a barrier cream.

An allergic reaction may look similar but tends to appear more suddenly, can spread beyond the nappy area, and may include raised welts, blistering, or swelling. It’s often linked to a specific product - such as a new brand of nappy, wipe, or cream.

Treasures nappies are free from latex, fragrance, lotions and toxic treating agents, making them a gentle option for sensitive skin. If you suspect your baby is having an allergic reaction, or if a rash is severe, spreading, or not improving after a couple of days, we recommend contacting your GP or Plunket nurse.

Our nappies are made with a pearl-embossed, ultra-soft top sheet that sits against your baby’s skin, a breathable outer layer, and a highly absorbent core. The leg cuffs are made with soft, stretchy material to move with your baby and help prevent leaks. All materials are selected with baby’s comfort and skin health in mind.

Treasures nappies are free from latex, fragrance, lotions and toxic treating agents. We’re committed to keeping things as simple and safe as possible for your baby’s skin.

Pack sizes depend on the nappy size:

• Newborn - Size 1 (up to 5kg): Bulk Pack of 54
• Infant - Size 2 (4-7kg): Bulk Pack of 48
• Crawler - Size 3 (6-11kg): Convenience Pack of 20, Bulk Pack of 44, Super Jumbo Pack of 132
• Toddler - Size 4 (10-15kg): nappies in Convenience Pack of 18, Bulk Pack of 36 and Super Jumbo Pack of 108; nappy pants in Convenience Pack of 18 and Bulk Pack of 34
• Walker - Size 5 (13-18kg): nappies in Convenience Pack of 16 and Bulk Pack of 32; nappy pants in Convenience Pack of 16, Bulk Pack of 30 and Super Jumbo Pack of 90
• Junior - Size 6 (16kg+): nappies in Bulk Pack of 30; nappy pants in Convenience Pack of 14 and Bulk Pack of 28

Super Jumbo packs give the best value per nappy. You’ll also find our range in-store at Woolworths NZ.

Not sure which size your baby needs? See our sizing chart.

Treasures baby wipes are made with 100% natural, plant-based ingredients and over 99% purified New Zealand water. They are biodegradable, toxin-free, vegan friendly and hypoallergenic, and proudly made right here in Aotearoa. We offer two variants:

• Fragrance Free - with chamomile and aloe vera, for sensitive skin and everyday use
• Cucumber & Aloe - lightly scented with cucumber essential oil and aloe vera for a fresh, gentle clean

Yes. Both variants are hypoallergenic, toxin-free and formulated to be gentle on delicate skin. Our Fragrance Free wipes with chamomile and aloe vera are particularly well suited to newborns or babies with sensitive skin. They’re safe for everyday use from birth.

Yes, absolutely. Our wipes are gentle enough for everyday use all over your baby’s body - hands, face, and beyond. Both variants are hypoallergenic, toxin-free and made with over 99% purified New Zealand water, so you can use them with confidence wherever they’re needed.

No - please don’t flush our wipes, even though they are plant-based and biodegradable. Flushing wipes of any kind can block pipes and cause issues for New Zealand’s wastewater systems. Please dispose of them in the bin.

Treasures nappies and wipes are available exclusively at Woolworths New Zealand stores nationwide, as well as through the Woolworths NZ online store at woolworths.co.nz.

We don’t offer subscriptions through our own website, but Treasures nappies are available through the Woolworths NZ online store at woolworths.co.nz, where you may be able to set up a repeat order. Our nappies are also available in all Woolworths NZ stores nationwide.

Yes, proudly. Treasures is 100% New Zealand owned and has been for over 50 years. As New Zealand’s original nappy brand, we’ve been supporting Kiwi families through the parenting journey for generations.

Treasures has been part of New Zealand family life for over 50 years, making us the country’s original nappy brand. A lot has changed since we started - but our commitment to quality, comfort and Kiwi families hasn’t.

We’d love to hear from you. You can reach our team via the contact form on our website. We take all feedback seriously and aim to respond in a timely manner.