Preemie Diapers
Aiwibi Preemie Diapers are specifically designed for premature babies, offering a smaller, more precise fit to gently support even the tiniest bodies. Its 1mm ultra-thin core, made from 100% Japanese SAP, absorbs quickly without adding bulk, while the mildly acidic top sheet helps protect fragile skin by maintaining a healthy pH balance. A carefully shaped umbilical cord cut-out and breathable MicroAiry PE film™ work together to reduce irritation and keep your baby dry, safe, and truly cared for from day one.
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Umbilical Cord Cut-out
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Silky-soft & Hypoallergenic
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0% Fragrance, Lotions And Extracts
Size Range
Our Premium Diapers are available in sizes N - XXXL(1-7).
- Newborn （1）< 5kg
- S（2）4 - 8kg
- M（3）6 - 11kg
- L（4）9 - 14kg
- XL（5） 12 - 17kg
- XXL（6） 15 - 21kg
- XXXL（7）≥18kg
Not sure which diaper size to choose? Check out our Size Guide.
| Age(Months) | Baby Weight (KG) | Waist (cm) | Size | Daily Usage (Pcs) |
| 0-1 | ＜5 | 33-45 | NB (1) | 10-12 |
| 1-3 | 4-8 | 34-52 | S (2) | 8-10 |
| 6-10 | 9-14 | 36-56 | L (4) | 8-10 |
| 11-15 | 12-17 | 37-57 | XL (5) | 6-8 |
| 15-24 | ＞15 | 38-58 | XXL (6) | 6-8 |
| ＞24 | Toddler | 41-69 | XXXL (7) | 5-6 |
1. Aiwibi Diaper Storage Tips
① Store diapers in a cool, dry place, away from direct sunlight.
② If the packaging is damaged, contact our customer service immediately for a replacement.
③ Once opened, use the diapers as soon as possible to keep them in optimal condition. Because Aiwibi super power absorbent core can absorb moisture from the air, so long exposure to humidity may reduce its absorption performance.
2. When should you switch to a bigger size?
① If the diaper feels too tight around the thighs and waist, or you notice red marks.
② When the waistband stickers are being fastened near or at the outermost position.
③ If the diaper seems too short in the crotch area or sits below your baby’s belly button.
④ When your baby’s pee or poop output increases, leading to more frequent leaks.
⑤ If your baby’s weight exceeds the recommended range for their current diaper size.
3. When is the right time to switch from taped diapers to pull-up pants?
When your baby starts moving around more and doesn’t like lying down for diaper changes, or when they begin standing up on their own, it’s a good time to switch to pull-up pants! They’re super convenient—just pull them on like underwear and tear them off when needed. Perfect for active little ones on the move!
| ltem No | Size | Length | Width | Weight±2.0g |
| 07A-02 | S | 400mm | 320mm | 20.4g |
| 07A-03 | M | 450mm | 320mm | 26.8g |
| 07A-04 | L | 500mm | 320mm | 29.4g |
| 07A-05 | XL | 530mm | 340mm | 32.3g |
| 07A-06 | XXL | 550mm | 340mm | 32.8g |
So We Made One
Co-developed with pediatric skin experts and the Aiwibi Charity Funds,
we created Aiwibi Preemie Diapers for them.
Tailored Fit for Tiny Bodies
- 11% smaller than standard newborn size
- 20% less contact area-less friction, more comfort·
Carefully Selected Ingredients,
Tried and Tested
The Diaper Core
- 100% Super Absorbent Polymers (SAPs) from Japan (Sandia & Sumitomo)
- Clinically tested for sensitive and preterm skin.
Encased in the softest fabric
The Diaper Fabric
Synthetic fiber blend:
- Polypropylene
- Polyethylene
Mildly acidic top sheet matches baby’s skin pH to reduce irritation
Gentle Fit Waistband
- Umbilical Cord Cut-Out
- Perfectly shaped to protect delicate belly buttons
Critical for NICU babies with healing umbilical cords.
The Leg Cuffs & Fastening Straps
- Elastane (naturally latex free*)
- Flexible comfort as your baby grows
Gentle on fragile skin, easy to adjust during medical care.
Pigments
- Printed with eco-friendly, water-based ink
- with cute, non-transferrable designs
gentle on baby’s skin
You won’t find any…
Parabens
Bisphenol A (BPS)
Elemental Chlorine
Latex (natural rubber)
Dioxins
Disperse Dyes
Ethanol/Drying Alcohol
Lead and Mercury
Organotins
Pesticide Residues
Phenol
Polyvinyl Chloride (PVC)
Certifications
Our diapers are hypoallergenic and dermatogically tested and approved
FAQ
How can I prevent leaks when using diapers?
Our diapers are designed with double leak-guard barriers, but here are some things to check when putting them on:
- The weight range on the diaper packaging is just a guide. If the diaper is too big, it can cause leaks. For example, the diaper may fit snugly around your baby's thighs, but if there's a gap in the crotch area, urine won't be absorbed quickly enough.
- Make sure the leak-guard edges aren't folded inward. If you're using taped diapers, ensure the waist tabs are symmetrical, not too tight or too loose. A good fit allows space for one finger between the diaper and your baby's tummy.
- Change the diaper when it's full; if you don't, leaks might occur.
Will my baby get diaper rash or have an allergic reaction?
- To prevent diaper rash, change your baby's diaper frequently. It's recommended not to leave the same diaper on for more than 2-6 hours.
- Clean your baby's bottom with warm water or wipes to remove any residue.
- Let the skin dry completely before putting on a new diaper.
Why does the outside of the diaper feel damp, even though my baby's clothes aren't wet?
The outer layer of the diaper is made from breathable non-woven fabric. It locks in moisture while allowing heat and humidity to escape. The dampness you feel is likely due to the release of warm air, which might also carry a slight smell from your baby's pee or poop. This design helps keep your baby's bottom dry and comfortable by reducing stuffiness.
Why does the diaper have a smell?
- Aiwibi diapers are certified by the German Dermatological Institute Dermatest, ensuring they are gentle on your baby's skin. We do not add any fragrances, extracts, dyes, or other harsh chemicals, making the diapers odorless and hypoallergenic.
- Some of the raw materials might have a mild natural smell. If you're sensitive to smells, you can air the diapers out before use.
- Diapers can also absorb odors from their surroundings, so be sure to store them in a cool, dry place away from anything with a strong scent.
Are Aiwibi diapers “organic”?
Aiwibi diapers are made using high-quality wood pulp derived from nature. This pulp comes from sustainably managed forests, so while we use natural resources, we also prioritize environmental protection and sustainability. Through fine processing, we maintain the natural absorbency and softness of the material to provide your baby with a comfortable wearing experience while reducing irritation to their sensitive skin.
How often should I change my baby's diaper at night?
It depends on how often your baby pees and the quality of the diaper you're using. You should choose diapers with strong absorbency and good moisture-locking abilities. When your baby wakes up during the night, you can feel the diaper—if it's puffed up, it's time for a change. Unfortunately, that means you or your partner will need to wake up to do the diaper duty!
What should I keep in mind when changing diapers? Is there a difference between boys and girls?
Always wash your hands with soap and water before changing your baby to avoid spreading bacteria. Clean your baby's bottom with warm water and mild soap, and gently pat dry. When wiping, be careful not to rub too hard, as this can irritate their sensitive skin and cause diaper rash. In winter, try to keep the diaper change quick to avoid your baby getting cold.
As for the difference between boys and girls, traditionally, the absorbent core in boy's diapers is placed more towards the front, and for girls, it's placed more towards the back. However, Aiwibi diapers are designed to work well for both boys and girls thanks to our product adjustments during development.
What causes diaper rash?
There are two main reasons:
- Some babies have sensitive skin or are prone to allergies, which can cause skin reactions when wearing diapers. This can lead to redness or swelling around the diaper area.
- Diaper rash (also known as diaper dermatitis) can also be caused by inflammation. Babies' skin is very delicate, and if diapers become damp or are exposed to bacteria, it's easy for diaper rash to develop. It's important to change diapers frequently and thoroughly clean the baby's bottom after each bowel movement to prevent this.
How should I store opened diapers to avoid contamination (e.g., from mosquitoes, dust, or humidity)?
Whether opened or unopened, diapers should be stored in a clean, dry place, away from direct sunlight to avoid moisture and contamination. Keep opened diapers away from areas with high temperatures or strong odors, as this can cause them to lose their shape or pick up unwanted smells. It's best to use opened diapers within 2-3 months. If you live in a humid environment, try to use them within a month to avoid bacterial growth.
Should I stop using diapers if my baby gets diaper rash?
It depends on how severe the rash is. For mild cases, you can continue using diapers but should take these steps:
- Change diapers frequently.
- Use a diaper rash cream or powder to keep the area dry.
- Boost your baby's immune system by ensuring they get enough nutrients.
- If the rash is severe, stop using diapers and consult a doctor immediately.
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