For new parents, choosing diapers often feels like a puzzle. Diaper size is not just about the number on the package but also about comfort, skin protection, and baby’s growth pattern. Diapers that are too small can irritate baby’s skin, while those that are too big leak and don’t fit around the waist.
Through this complete guide, MIUBaby will help you understand how to choose the right diapers according to your baby’s age and weight, so that your little one is always comfortable at every stage of growth.
1. Why does diaper size matter?
Every baby grows at a different pace. That is why diaper size cannot just follow age but should also consider the baby’s weight and body shape.
Diapers that fit will:
- Prevents leakage without putting pressure on the baby’s stomach
- Reduces the risk of rashes and friction
- Helps baby move freely without feeling claustrophobic
On the other hand, the wrong size diapers can cause:
- Red marks on the waist or thighs
- Leakage at night
- Discomfort that makes it difficult for the baby to sleep
MIUBaby Tips: When changing diapers, make sure there is about a finger’s width at baby’s waist. If the diaper feels too tight, it’s time to go up a size.
2. Diaper Size Based on Baby’s Weight
Here’s a general guide to diaper sizing based on body weight. However, keep in mind: every brand has slight size differences, so always adjust to the guidelines of the brand you’re using (like MIUBaby).
| Diaper Size | Baby Weight | Average Age | Description |
| NB (Newborn) | < 5 kg | 0 – 1 month | Suitable for newborns with very sensitive skin. Choose diapers with flexible adhesive that are soft & breathable. |
| S (Small) | 4 – 8 kg | 1 – 3 months | Baby starts to kick actively. Choose diapers that are pants-type and highly absorbent. |
| M (Medium) | 6 – 11 kg | 3 – 6 months | Suitable for babies who are starting to roll over. Pant-type diapers are starting to be used. |
| L (Large) | 9 – 14 kg | 6 – 12 months | Babies are more active in crawling. Choose diapers that ergonomically follow the circumference of the baby’s thighs & waist so that the baby is free to explore. |
| XL (Extra Large) | 12 – 17 kg | > 1 year | Baby is learning to walk. Need pants diapers that are easy to remove. |
| XXL | 15-24 kg | > 2 years | Babies are already active and need protection that can support their activities throughout the day. |
3. Diaper Type: Adhesive vs Pants
In addition to size, the type of diaper is also important according to the baby’s developmental stage.
Tape Type Diapers
- Suitable for: Newborn to 6 months
- Pros:
- Easy to change without removing the entire garment
- Ideal for babies who are not yet mobile
- Adjustable adhesive tightness
- Disadvantages:
- Less practical for babies who are starting to actively crawl
All MIUBaby product variants feature Hyper Elastic Waistband which functions provides maximum comfort, following your little one’s movements without disturbing their activities.
Pants Type Diapers
- Suitable for: Babies aged 6 months and above
- Pros:
- Practical to use, like wearing pants
- Does not come off easily even if the baby is active
- Suitable for little ones who are starting to learn to walk
- Disadvantages:
- Need to be completely removed when changing diapers
MIUBaby Pants Series with Quick Lock 0.1 Second technology absorbs liquid immediately, keeping your little one dry, comfortable and leak-free all day long.
4. Signs that the diaper doesn’t fit anymore
Change diaper sizes if you notice any of these signs:
- Diapers often leak even though they have only been worn for a short time
- Red marks on the baby’s thighs or waist
- Baby appears restless when wearing a diaper
- Diaper surface looks too tight or bulging
If these signs appear, increase the diaper size even if the baby’s weight is not fully in line with the chart. Every baby has a different body shape, and comfort always comes first.
5. Ideal Diapers: Comfortable, Safe, and Skin-Friendly
The best diapers are not just about price, but also how they keep your baby’s skin healthy. Make sure the diapers you choose have:
- Soft and smooth coating
- High absorption without clumping
- Chemical and fragrance free
- Good air circulation to keep skin moist
MIUBaby is designed with the latest technology for maximum comfort of your little one:
- Cool Air Flow keeps air circulation optimized to keep baby’s skin cool and moisture-free.
- Diamond Shape Pillow Pads help quick and even absorption, keeping the surface dry.
- Hyper Elastic Waistband provides extra comfort with soft fringe that fits baby’s body without leaving marks.
- Quick Lock 0.1 Second immediately locks in liquid to keep diapers dry, clump-proof and leak-free all day long.
Conclusion: Proper Diapering, Comfortable Baby, Relaxed Mom
Choosing diapers isn’t just about size – it’s about small considerations that have a big impact. With the right diaper, baby can sleep well, move freely, and grow happier. Remember: comfortable baby = calm parents.
Find the diaper size that fits your little one best!
MIUBaby diapers come in a wide selection of sizes from Newborn to XXL with soft, highly absorbent, and moisture-wicking materials.
