Size 3 Diapers
Size 3 diapers are a big milestone. At Alppi Baby, we know this is the stage when your little one is rolling, sitting, and maybe even crawling. That means you need diapers that move with them while still keeping everything dry and comfortable.
Our size 3 collection is made with alpine‑inspired comfort and advanced LiquidLock™ absorbency, so you can focus on playtime instead of leaks.
Keep Your Baby Dry Through Every Wiggle and Nap
When your baby is more active, you need protection that can keep up. Our size 3 diapers are designed for long stretches of dryness without slowing your little one down.
Absorbency that Works All Fay
- Holds up to 233% more liquid than standard diapers
- Absorbs 2x faster to keep skin dry and rash‑free
- 3x absorbency capacity makes it perfect for naps and overnight
Breathable Comfort That Feels Like a Hug
Your baby’s skin deserves soft, breathable comfort that never feels bulky. That’s why our Cloudfresh™ fabric is designed to keep air flowing while staying ultra‑slim.
Lightweight and Gentle
- 20% more breathable for cool comfort during play
- 60% thinner design that fits under tiny outfits with ease
- Soft, cloud‑like materials that move with every roll and crawl
Safe Materials Parents Can Trust
We know parents read every label. That’s why our size 3 diapers are made with clean, safe materials you can feel good about.
Gentle Protection for Sensitive Skin
- Totally chlorine‑free core for pure absorbency
- No fragrance, latex, dyes, parabens, or phthalates
- Dermatologist‑tested and crafted in FDA‑registered facilities
Designed for Real Life Moments
Diaper changes happen everywhere, from the nursery floor to the backseat of your car. Our thoughtful design makes every change smoother and less stressful.
Smart Features for Parents on the Go
- Stretchy waistband and soft tabs for an easy, comfy fit
- Individually wrapped diapers that stay fresh and clean
- Playful Alppi characters that make changes more fun
- Subscription delivery so you never run out
Explore More Collections Parents Love
- Staff Pick Collection– A curated set of diapers our team loves most, tested and approved by real parents.
- Safety Page Collection – For parents who want the cleanest, safest diapering options available.
- Wispy Cloud Diaper Collection – Our softest, most breathable option for babies who need extra comfort.
Why Choose Alppi Baby Over Others
At Alppi Baby, we don’t just make diapers. We create products that blend science, comfort, and care. Our LiquidLock™ and Cloudfresh™ technologies give unmatched absorbency and breathability.
Every diaper is eco‑conscious, individually wrapped for hygiene, and crafted with safe materials parents can trust. With us, you get more than diapers—you get peace of mind, convenience, and a little alpine comfort in every pack.
Frequently Asked Questions on Size 3 Diapers
What is the weight for size 3 diapers?
Size 3 diapers typically fit babies weighing 16 to 28 pounds. This range covers many babies from around 5 to 24 months, depending on their growth. Weight is always the most accurate way to decide when to move into size 3.
What age do babies move to size 3 nappies?
Most babies move into size 3 diapers between 5 and 8 months old. However, every baby grows at their own pace, so some may reach size 3 earlier or later. Always check the weight guide and fit rather than relying only on age.
Which size diaper do babies stay in the longest?
Babies usually stay in size 3 diapers the longest. This size covers a wide weight range and often fits during the busiest stage of crawling and early walking. Many parents find their little one stays in size 3 for several months before moving up.
What is the smallest diaper size?
The smallest diaper size is newborn, designed for babies under 10 pounds. Some brands also offer preemie sizes for babies under 6 pounds. These tiny diapers are made to fit snugly and gently on delicate newborn skin.
