Size 1 diapers are such a special milestone – they're often baby's first step up from those tiny newborn days! At Alppi Baby, we've crafted our size 1 collection with the same alpine-inspired comfort and LiquidLock™ technology that gives you confidence during those beautiful, messy early months when every day brings new adventures.
Size 1 Diapers with Superior Protection
You know those middle-of-the-night changes and busy mornings when you need a diaper that just works? We've got you covered with absorption that actually delivers.
LiquidLock™ core holds 233% more liquid than leading brands
2x faster absorption means less time against baby's sensitive skin
3x absorbency capacity for those longer stretches between changes
Reliable blowout protection that saves your sanity (and laundry!)
Need something extra special? Check out our Staff Pick collection for staff-approved favorites.
Breathable Softness Your Baby Will Love
There's nothing like seeing your little one comfortable and happy. Our Cloudfresh™ fabric keeps things gentle while your baby discovers the world around them.
20% more breathable so baby stays cool during active play
60% thinner design that doesn't add bulk under those adorable outfits
Cloud-soft materials that feel like a gentle hug
Flexible fit that moves with all those precious wiggles and rolls
Baby-Safe Diapers for Peace of Mind
Moms read every label carefully. That's why we've made sure every ingredient meets our highest safety standards.
Totally chlorine-free core because your baby deserves the purest materials
No fragrance, latex, dyes, parabens, or phthalates – just clean protection
Dermatologist-tested for even the most sensitive skin
Made in FDA-registered facilities with rigorous safety testing
We know diaper changes happen everywhere – nurseries, car backseats, park benches. Every detail is designed to make your life just a little bit easier.
Stretchy waistband and soft tabs that won't pinch or pull
Individually wrapped diapers that stay fresh and clean
Sweet Alppi characters that make diaper time a little more fun
Convenient subscription delivery so you never run out
Most little ones wear size 1 from around 2-8 weeks old through about 2-4 months, depending on their birth weight and growth rate. Babies typically move into size 1 once they outgrow newborn diapers around 8 pounds.
What weight is a size 1 diaper?
Size 1 diapers fit babies weighing 8-14 pounds perfectly. This sweet spot usually covers those early months when babies are establishing feeding routines and growing steadily. Weight is always more reliable than age for getting the right fit.
How to know when to go up in diaper size?
Watch for telltale signs like frequent leaks, red marks around the waist or thighs, or tabs that barely reach the front. The diaper should feel snug but comfortable, like a gentle hug. When in doubt, sizing up often solves mysterious leak issues.
Can my 7lb baby wear size 1 diapers?
Your precious 7lb baby will be most comfortable in newborn size diapers. Size 1 will likely be too big and may cause leaks or gaps around those tiny legs. Stick with newborn until baby reaches closer to 8 pounds for the best fit.
