Are you cloth diapering a skinny baby? Two of my boys are on the petite side: my 3 year old is short and stout, and my 1 year old is long and lean. Both fit one size cloth diapers differently. My Littlest is now 15 months old and hovers around the 18lb mark. He wears size 18m clothing. These are the one size cloth diapers that we still wear on the smallest rise setting!
I didn’t expect babies 2 and 3 to be petite, but they are. My oldest, Big, was a moose! He was a hair shy of 9lbs at birth and was always 98th percentile and at least 2 sizes ahead in clothing. He is now 13 and stands 5’9″ (for today, at least LOL), wearing mens clothes and size 12 shoes. My “Little” and “Littlest” are 3 and 1 years old respectvely, and both are much more petite. Little is still in some 2T clothes, but mostly 3T. Most of his peers are much larger than him. Littlest is still in cloth diapers and, while taller than his middle brother was, he’s very lean and pretty much in the 50th percentile since birth.
When did “One Size” Cloth Diapers start fitting?
Littlest fit most of our “One Size” cloth diapers by 10lbs, but there were a few brands that did fit us from birth. Funky Fluff, Best Bottom and GroVia Hybrids all fit him from day one. I got them post-newborn, but I suspect that our AMP and AppeCheeks One Size would have fit at birth too.
Some One Size diapers run larger. BumGenius/Flip, Thirsties Natural, and Smart Bottoms did not fit us until 2 months later. Since he is now only around 18lbs at 15 months, so many of the One Size cloth diapers are still on the smallest rise. And they have been on these settings since he outgrew newborn his diapers at 2.5 months.
He wears his Funky Fluff and Best Bottoms on the second rise now, and, despite the fact that Grovia fit him from birth, he is still on the smallest rise on that one! The GroVia crossover snaps, or form fitting industry-unique hook and loop, offer a great newborn fit even though the diaper is a bit larger.

Smart Bottoms Dream Diaper (original)
Which brands are still on the smallest rise?
I already mentioned GroVia above, but there are a few other cloth diapers marketed as One Size that Littlest still wears on the smallest rise.
Smart Bottoms – both my 3.1 and Dream Diaper are on the smallest rise. We haven’t yet tried the Dream Diaper 2.0. FYI, the Dream Diaper is quite narrow and a skinny baby’s dream for sure!

One Size Flip Cover
bumGenius – my Freetime, Elemental, 5.0 pocket and Flip covers are all on the smallest rise. The Elemental had a brief stint on rise 2 last summer, but he started walking and lost some chunk so we are back on the smallest.

New Thirsties One Size Pocket
Thirsties – My One Size Natural AIO’s and One Size Natural Fitteds are still on the smallest rise. The One Size Thirsties pocket is also on the smallest rise. Note that I previously owned a Thirsties One Size pocket from 2014 that was smaller than the current one being sold. It fit Littlest from birth.
Omaiki – My Omaiki Orion fitted diaper, and Omaiki One Size Cover are both on the smallest rise with room to spare on the cover. You can read my review here.
Which One Size Cloth Diapers are on the second rise setting now?
Most of the following are marketed for 6-7lbs and up. Some go up to 30 and others to the standard 35lbs.
Funky Fluff – I use offbrand inserts in my Funky Fuff, but even with their inserts my shells are all fitting on the 2nd rise settings. Note: FF has more rises than other brands mentioned here, and will therefore fit baby for longer.
AMP – Our One Size AMP pocket diapers are all on the 2nd rise, even when double-stuffed for overnight.
AppleCheeks – Our One Size AppleCheeks are on rise two as well and give us an amazing fit!
Best Bottom – Our original One Size Best Bottom diapers are on the second rise. The “Bigger Best Bottoms” are efinitley bigger and still on the first rise. The Cotton One Size are on the 3rd setting because they fit tighter with less stretch.
GroVia O.N.E. – We use our O.N.E. for overnights mainly, with one extra booster, and all the padding needs the second rise setting to fit. For any (rare) daytime use, we can use the smallest rise.
What does this mean?
I was able to diaper from birth to 2yo potty training with smaller One Size diapers, like Best Bottom, but other moms wih less petite babies may not. The diapers that I’m currently using on the smallest rise might get your bigger babies futher. Also, you might potty train later than I did.

GroVia One Size Hybrid Shell
Funky Fluff and Grovia are my two most recommended Birth to Potty One Size diapers because they get very small for the newborn stage whil still being quite roomy at the larger sizes. My Little never even made it to the largest size on either brand before he was potty trained at 2 years.
Are you cloth diapering a skinny baby?
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As a mama who makes chunky babies, this is a totally awesome resource! Thanks for joining the link up and letting us know diapers fit. I’m totally surprised at all the differences compared to my chunky 12month old.
My LO is not skinny but 98th percentile for height, so at 16 mo. I am beginning to see where a lot of his diapers will not last until potty training. The best fit for us still is the Thirsties pocket, but we haven’t tried GroVia or Funky Fluff. I’ll have to keep them on my radar to try. Also, it’s good to know about the Omaiki fitted because he just outgrew the rise on his THX bamboo fitteds that he’s worn since birth for nighttime. We’ve now switch to your prefold sandwich instead.
This is a great post!! I finally branched out from the Fuzzibunz and BumGenius pockets I used with my girls to some other brands for this little one coming soon. I got some Thirsties, Smart Bottoms, an Applecheeks, and a Funky Fluff diaper for this little guy. I still need more, but most of what I got are AIO’s. I was wondering how they would fit long term. My kids tend to be long and thin, so this tells me a lot about the rise and fit of some of these diapers!! Thanks for the info!
This is good to know because all of my babies have been skinny!
I want to try a Best Bottoms and Funky Fluff. My #3 is 2 weeks old today and is soaking out of his newborn covers. I was looking for something trim that he might be able to wear sooner than later.