Wednesday, August 25, 2010

One Size Diapers and the size of YOUR baby


I often get asked, "which one size diaper is the best?"
My answer usually depends on their baby. Most cloth diapers fit each baby just a little differently. One size cloth diapers are no different.
So how do you decide? Here are a list of the one size diapers that Simple Wonders Diapers carry and a description of how they fit skinny babies, average size babies and large babies/toddlers. These are my opinions (as opposed to the manufacturers) based on my experience with my own kids and the many children I have helped to put in cloth diapers over the past 5+ years.

bumGenius One Size Diapers (Pockets, AIO, and FLIP): Tend to fit skinny babies and average size babies well. Tend not to fit larger babies and toddlers well, although that fit is much improved with the new 4.0 version. Start fitting well around 8-9 lbs. One of the most popular one size diapers out there. They fit trimly and are very easy to get on and off.

Happy Heinys One Size Cloth Diapers (both aplix and snaps): These fit the entire range really well. They start fitting well around 9-10 lbs, but certainly fit babies and toddlers at the upper end of the weight range (35 lbs) and I've seen toddlers even a little bigger fit well into the Happy Heinys One Size diapers. If you have a very large baby or toddler, I suggest either going with the Happy Heinys or Knickernappies One Size.

Knickernappies One Size Diapers: These are another style of one size diaper that fits the whole range well. They start fitting around 10 lbs. The major bonus with Knickernappies one size diapers is that they actually do fit up to 40lbs. By far, the longest fitting one size diaper.

Rocky Mountain One Size Diaper: These fit well on the smaller end of the range. Unlike other one size diaper though, these fit 7lbs very well. I find the Rocky Mountain One Size Diapers to fit very well on newborns (after the umbilical cord falls off).

Wahmies One Size Diapers: These tend to fit very true to their statement of starting to fit around 7lbs and up to close to 40lbs. As a bonus, they come in both the hook closures and snaps. Although the hook closures are a little tricky at first, they do get much easier with time. An added bonus of hte hook closures are that they are the ONLY closure a curious toddler cannot get undone.

Fuzzi Bunz One Size Diapers: LOVE these one size diapers! The internal elastic adjustments on them ensure a nice trim fit even on the smaller range of the weight spectrum. They have elastic in both the waist and legs so they can adjust to 8 different size settings rather than the 3 or 4 in most one size diapers that adjust via snaps in the front.

Rumparooz One Size Diapers: The only diapers with the internal gussets that I adore. They will start fitting at 6.5-7 lbs. If you have a baby that stays on the smaller range of the spectrum, they are wonderful. However, if you have a very large baby that gets even larger as a toddler, you may need fit problems as your toddler reaches the 30 lb mark.

Softbums One Size AI2: Another of my absolute favorites. These get so teeny tiny, it is amazing. Similarly to the Fuzzi Bunz One Size diapers, they adjust via elastic in the legs. However, they have a toggle on the elastic allowing for the ultimate in adjustability. Rather than Softbums fitting into a small, medium and large, it is simply a continuum of fits. Great concept and wonderful fit!

Lollidoo One Size overnight diapers: truly the ultimate overnight solution. However, I also like the classic lollidoo and the lollidoo diaper covers. All one size! Lollidoos adjust with elastic in the legs and fleece is rediculously stretchy. Fits smaller babies and toddlers well.

Thirsties AI2: choose from a prefold or stay dry duo insert. These are actually 2 sizes - size 1 fits 6-18 lbs and size 2 fits 18-40 lbs. Another nice AI2 system.

Overall recommendations:
If you have a skinny/small baby: you can choose from most any of the one size options. BumGenius, Rumparooz, Softbums, Fuzzi Bunz, Rocky Mountain, Wahmies and Lollidoo Diapers will all work very well for you.
If you have an average size baby: BumGenius, Happy Heinys, Knickernappies, Wahmies, Softbums, Fuzzi Bunz, Lollidoo, Thirsties diapers will all work very well for you.

If you have a larger/very chubby baby: Happy Heinys, Softbums and Knickernappies are wonderful for the cute little chubby legs.
Please keep in mind, these are my opinions after being in the cloth diapering business 5+ years. Do you have any one size diaper tips that you would like share? Just post your response or email it to me at info (at)


  1. Wow! These are very nice and quite. Really this is very informative to know how different age of baby use different types of diapers. Thanks for sharing with us....

    Overnight Adult Diapers



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