Thirsties stretchy cotton flat organic diaper size

Thirsties Organic Cotton Flat Diaper

3 reviews
Regular price $10.85 Sale price$10.30 Save 5%
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Stretchy flats.  Stretchy knit organic cotton flat diaper.  Best for trifolding or wrapping (wrap baby and tuck in ends).   Snappis and pins might damage knit cotton.  It's also a very lovely receiving blanket. 

Sold individually.

 Features and Benefits:

  • Single layer of certified organic cotton
  • Stretchy, soft knit cotton provides a comfortable and customizable fit
  • Very versatile--can be folded in numerous ways to maximize absorbency where your baby needs it
  • Single layer dries quickly and is a great, low-maintenance option for hand washing and/or line drying
  • Less bulk makes these easy to double with another Flat or pair with a Thirsties Hemp Insert or Organic Cotton Doubler for even more absorbency
  • Place inside a Duo Wrap or Diaper Cover to complete your waterproof system


 Thirsties Organic Cotton Flat is a single-ply, one-size-fits-all diaper that can be folded in numerous ways to provide customizable absorbency. We recommend washing and drying your Thirsties Organic Cotton Flat at least three times before use to rid the fibers of natural oils for maximum absorbency.

 Try different folds to find the right absorbency concentration for your baby.  A fan favorite and the fold we recommend due to its simplicity and performance is the pad fold.  Simply pad fold your Thirsties Organic Cotton Flat, and lay it in a Thirsties Duo Wrap or Diaper Cover for a complete diaper system for your baby. Additionally, Thirsties Organic Cotton Flats may be used for additional absorbency in Thirsties Pocket Diapers. Very soft and stretchy jersey knit. 

 If using a fastener with our flats, please note fasteners can leave small holes that shouldn’t affect function, but the holes are not covered under our warranty.  If you choose to use a fastener, rotate your flats during usage so different sides are fastened each time. Sold individually. Price is for one diaper. 



Pre Wash – approximately 29” x 27.75”

After Wash – approximately 27.5” x 27.5”



  • 1 layer of 100% GOTS Certified Organic Knit Cotton thirsties stretchy organic cotton flat in diaper cover

Notes from Karen:  What is a knit?  What is a woven?

Knits have stretch to them because of how they are made. Woven do not, except a bit of give on the diagonal but that's just a give not really a stretch. 

Knits can get holes from pins or Snappis.   Just like you might get a hole in a knit tee shirt if you pin a name tag to it, any knit can get a hole when pierced. It's the nature of knits.

Woven fabrics have criss-crossed threads and a pin or Snappi is less likely to damage cotton because of the fact that is is a woven fabric.   This item is a knit.   The fact that it is knit is why it has stretch to it.  Think of a knit tee shirt vs woven khaki pants, for example.  15 years ago I could say woven like jeans, but nowadays most jeans have added spandex, a synthetic, to make the woven stretchy.  In the old days cotton jeans did not stretch when they were made of 100% woven twill cotton.  None of our absorbency fabrics have added synthetics.  Cotton means cotton at GMD. 

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United States United States

Very soft and absorbent!

I was looking for something extra absorbent, but also trim for my 6 month old at night. He started out wetting 2 large birdseye cloth eez flats folded together for night time. Adding 2 birdseye double layer cloth wipes to that setup helped him not 100% saturate his diaper by the morning, but it also meant extra steps when folding his diaper (I use origami). Two of these folded together in origami is perfect for a simpler solution! They also are not completely saturated by morning - perhaps around 80% as opposed to the 100% of large birdseye flats. Definitely worth the extra cost for simplicity!

Sara P.
New York New York

So soft

I really like this flat. It absorbs a lot without feeling too bulky on my 5 week old. It is really soft and cuddly. I could see it also be used as a swaddle.

Mary .
United States United States


Ordered 10 of these to use as swaddling cloths, burp pads, etc. for my son and daughter-in-law who just had their first baby. Loved the softness, size and all around utility of them so much that I am ordering 10 for my daughter who is due in a few months. These diapers remind me of a softer, more useful version of the cloth diapers my mother used for all of us -- she always had one on her shoulder when there was a baby in the house.

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