As a parent in Nepal, choosing the right diaper for your baby is more than just a daily routine—it’s about ensuring comfort, safety, and happiness at every stage of growth. With the increasing popularity of premium international baby care brands in Nepal, Aiwibi has become a trusted choice for many parents thanks to its high-quality, skin-friendly, and reliable diapers.
In this guide, we will introduce the Aiwibi diaper size options, with a focus on the most commonly used sizes—Newborn(NB), Small (S), Medium (M), and Large (L). This will help you better understand how to choose the right fit for your baby’s weight and growth stage, ensuring both comfort and effective protection for your little one.
Why Aiwibi Diapers Are a Top Choice for Nepali Parents
Before diving into the size guide, let’s understand why Aiwibi has become a go-to brand in Nepal’s baby care market. Originating from Australia, Aiwibi has been dedicated to providing meticulous care for babies since 2013, with a commitment to safety and quality that aligns with the needs of Nepali families. Our diapers are clinically tested by Germany’s Dermatest and rated “excellent,” ensuring they’re gentle on sensitive baby skin—perfect for Nepal’s varying climates, where humidity and temperature changes can irritate delicate skin.
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Aiwibi Diaper/Pants Size Chart
Choosing the right Aiwibi diapers/pants size starts primarily with your baby’s weight, as it is the most important factor in ensuring a snug and comfortable fit. Age and waist measurement can also be used as helpful secondary references. Below is the official Aiwibi diaper size guide to help you select the most suitable size for your baby.
Aiwibi Diaper Pants Size Chart

Aiwibi Diaper Pants Size Chart

Note: The size chart above applies to Aiwibi standard diapers. Diaper sizes may vary between different brands, so this chart should be used as a general reference only. Always refer to the specific product packaging for the most accurate fit information.
A Closer Look at Aiwibi’s Most Popular Sizes in Nepal
In Nepal, most parents frequently use Aiwibi Newborn(NB), Aiwibi Small (S), Medium (M), and Large (L) sizes, as these cover the critical growth stages from 1 month to 10 months. Let’s explore each size in detail to help you make the right choice.
1. Aiwibi Newborn Size Diaper (NB Size)
At Aiwibi, our newborn diapers are specially designed for babies weighing under 5 kilograms, with every detail created to support your baby’s earliest stage of growth and comfort. For premature babies weighing under 2,500 grams, we recommend using specially designed preemie-size diapers to ensure a better fit, gentler protection, and more suitable care for their delicate needs.
During the newborn stage, babies need frequent diaper changes, so soft materials, strong absorbency, and easy monitoring are especially important. Our newborn diapers help protect delicate skin, while features like the wetness indicator and umbilical cord cut-out make daily care easier for new parents.
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2. Aiwibi Small Size Diaper (S Size)
The Aiwibi Small Size Diaper (S Size) is designed for babies aged 1–3 months, weighing between 4–8 kg, with a waist measurement of 34–52 cm. At this stage, babies begin stretching, kicking, and moving more during sleep and feeding.
Since newborns are usually weighed regularly at the hospital, parents often have a clear reference during the first few weeks. As babies grow, you can also monitor weight easily at home by using a baby scale or by weighing yourself first, then holding your baby and subtracting the difference. This helps ensure you choose the right diaper size as your baby continues to develop.
A well-fitted diaper helps reduce leakage and keeps babies comfortable throughout the day. Soft breathable materials and a gentle waistband help support daily movement without tightness.
2. Aiwibi Medium Size Diaper (M Size)
The Aiwibi Medium Size Diaper (M Size) is designed for babies aged 4–6 months, weighing 6–11 kg, with a waist measurement of 35–54 cm. This stage is a key transition period, as babies begin sitting up, rolling over, and becoming more active in their daily movements.
As babies become more active and spend less time lying still, many parents also begin considering diaper pants for easier changing.
Aiwibi Medium Size Diaper (M Size) provides strong absorbency and reliable leak protection, while Aiwibi Pants (M Size) offer added convenience for babies who dislike lying down during diaper changes. The pull-up style makes diapers easier to put on and remove, helping parents save time during busy daily routines.
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3. Aiwibi Large Size Diaper (L Size)
The Aiwibi Large Size Diaper (L Size) is designed for babies aged 6–10 months, weighing 9–14 kg, with a waist measurement of 36–56 cm. This stage is marked by rapid mobility development, as many babies begin crawling, pulling up to stand, and even taking their first steps—common milestones for babies in this age range.
It’s also worth noting that diaper sizing can often be used for an extended period. For example, size 4 diapers are typically suitable for babies from around 6 to 18 months, as growth rate gradually becomes steadier after 6 months.
Tips for Choosing the Right Aiwibi Diaper Size in Nepal
While the size chart is a great guide, every baby is unique—here are some practical tips for Nepali parents to ensure the perfect fit:
When babies are between two diaper sizes, it is often reasonable to consider sizing up—especially for nighttime use, where a slightly larger diaper can provide better absorption and reduce the risk of leaks. However, fit should always be checked carefully, as going up a size too early may cause gaps around the legs or waist for smaller or leaner babies.
As babies become more active—such as when they start rolling, crawling, or pulling up—the way the diaper fits can change. Increased movement may lead to shifting or reduced sealing around the waist and legs, even if the weight is still within the recommended range. In these cases, it may be helpful to consider the next size earlier, rather than waiting until the upper weight limit is reached.
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Final Thoughts: Aiwibi Diapers—A Trusted Companion for Nepali Parents
Choosing the right diaper size is essential for your baby’s comfort and your peace of mind. With Aiwibi’s comprehensive size range, high-quality features, and accessibility in Nepal, it’s no wonder the brand has earned millions of 5-star reviews from parents worldwide.
Whether you need Aiwibi Small Size Diaper (S Size) for your newborn, Medium Size (M Size) for your active crawler, or Large Size (L Size) for your toddler, Aiwibi’s size chart and thoughtful design ensure a perfect fit for every stage.
Choosing Aiwibi diapers means choosing a trusted companion for Nepali parents—supporting you through every stage of your baby’s growth with care and confidence.









