One Size™ Diaper


The One Size Fitted Diaper was our very FIRST cloth diaper we set to manufacture - creating the first and most popular diaper that adjusts to grow with your child until potty training age!

The generous design allows plenty of room for growth while using a gentle elastics around the waist and legs to ensure a comfortable leak-free fit.

Time tested, and with only one size needed the One Size Fitted offers you the very best value.


  • One Size - adjusts from 8 to 35 lbs
  • Natural fabric option
  • 13 oz (385 ml) absorbency
  • Gentle elastics around the waist + legs
  • Lifetime warranty on the Snaps + Elastic
  • 1 Year manufacturing warranty

Combine the One Size Fitted Diaper with our Air Flow Covers for a complete leak-free diapering system all day long! For nights, Add one Snap-in-Absorbent Liner to boost your absorbency for 12+ hours!

How to adjust the One Size Diaper: Folding Instructions.

Note: Fitted Diapers require the use of a waterproof diaper cover. Mother-ease recommends using the Air Flow (snap) or Rikki Wrap (Velcro) Covers to be worn over top, creating a leak-free diapering system.

Customer Reviews

Based on 43 reviews

2nd time cloth diapering overnight and it was a success with these! (: couldn’t be happier. We previously tried with a regular pocket from another brand and he leaked through.

No leak solution for growing babies

I am on kid # 3 and have a stash of used all in one diapers that I lucked out and got from a friend once she was done with them. They are my absolute favorite, I have never had a leak and they are still going strong after many kids and many years of use. I used them with the stay-dry liner which works well. If I had these from the beginning it would have saved me a lot of stress and wet pants, as my first son grew his legs thinned out and it seemed nothing would work but these were the answer. No matter the shape or size of your kiddo, these plus either the rikki or airflow and you are leak-free. I love that the diaper and cover don't have to be super tight to avoid leaks, you can leave it a little looser and let the air in without getting leaks which seems so much more comfortable on hot summer days.
They may not be as exciting as some printed all in ones or pocket diapers, but I choose plain and functional over cute and leaky any day! These seem comfortable for the little dudes and they are super simple to use, wash up well, and are super reliable.
If I ever need new diapers (which is unlikely since these are still doing the job well) I will be getting more of these.

Got rid of all my other diapers

When I started cloth diapering I picked up several different types (all in ones, pocket diapers, fitteds) from multiple brands. Motherease is the undisputed best.

These diapers are soft, flexible, and surprisingly unbulky. Compared to a pocket diaper they are bulkier round the hips and waist, but trimmer between the legs. My baby no longer has the cowboy wide-leg straddle look. I've never had a leak when paired with an air flow cover.

And they last! I supplemented my new purchases with used ones from someone else who'd used them on 4 babies over 15 years -- still just as absorbent and the stitching and snaps are all in place.

Worth the investment!

I told myself that I was only going to buy pocket diapers but after stuffing them 30 different ways and STILL getting leaks (my baby is a heavy wetting side sleeper) I finally bought these as a nighttime solution. I liked that they were One-size and I didn't have to buy two different kinds (with the Sandy).

My only issue with them is they don't seem to be overly absorbent on their own. I add a hemp booster and a bamboo insert to my nighttime diapers for my 5 month baby. It's bulky but the material is very soft and moldable.

YOU NEED TO GET THESE. We haven't had a single leak since (except on my own part for not putting the cover on properly).

Shicole Quigley

Since we've tried a couple other products with little luck, we bought 2 of these to give a try for our overnights. They worked AMAZING. Haven't had a single leak, so we've bought more since. Our nights are no longer interrupted with a leaky diaper. I love the fact that they are one size AND have the option of an add in liner for bigger babies. Definitely recommend.