By now, I’m sure you know this, but I love the Thirsties brand for everything they provide to the community – high quality, American made diapers with a solid side of community, knowledge, and support. At the end of the day, Thirsties is really supportive of the cloth space offering amazing tips and advice on their Isntagrm, Facebook and even YouTube Channels. 

That ramble aside, today I have a pile of the new duo inserts. These inserts came in two sizes – small and large. They also came in three variations: stay dry duo insert, stay dry natural duo insert and natural duo insert. 

These little inserts were designed to be amazing. They are a two piece system that you snap together. This combo gives an easy to clean and quick to dry system by reducing the overall bulk of the layers. See, trying to clean an absorbent 8 layer insert is challenging, but if you break into a 5 layer bottom layer and a two layer top layer, things speed up and wash up better. 

All three of these have one insert that is 5 layers of 55%hemp/45% organic cotton jersey. This is one layer less than the hemp inserts. The top layer on each of these inserts is slightly different. the Stay Dry Duo is 2 layers of microfibre terry with a microfleece topper. Then there is two natural versions with 3 layers of organic cotton. The stay-dry natural duo has the stain-resistant micro-fleece on top.

The Duo Insert is added to the Duo Wrap. The Size small pairs with the size 1 diaper, and the large with the size 2 option. Sized cloth diaper systems can be a great consideration for parents looking to cloth diaper newborns but maybe seeking a better more long lasting fit. 

Onto the science, or not the science. This is a channel to illustrate the absorbency of things and how they might perform and compare to other products. Learn how I absorbency test here, and join in below to let others know of your real life experiences with this product. 

Stay Dry Duo Inserts.

2 layers of microfibre, 5 layers of hemp/cotton. 

The small held 8.7, 8.5, and 8.6 ounces. This is an average of 8.6 ounces. At a cost of $7.50, that works out to 87 cents USD each. ($1.16 CAD per ounce)

The large held 12.5, 12, 11.6 ounces. This is an average of 12 ounces. At a cost of $7.50, that works out to 62 cents an ounce ().83 CAD). Which this is an incredible deal for an American made textile. This is a great bang for you buck if you’re okay with synthetic textiles. 

Natural Inserts. 

I’m also assuming that the stay dry natural and the natural is an identical product with or without a micro-fleece top. Micro-fleece shouldn’t hold enough liquid to impact the overall absorbency.

3 layers of organic cotton, 5 layers of hemp/cotton. 

The small natural held 6.9, 6.9, and 7 ounces for an average of 6.9 ounces. That runs at $1.15 per ounce USD for this $8 insert ($1.56/$10.75 CAD). It does make it expensive for an American made insert. But hey, organic cotton and locally milled hemp! 

The large natural held 8.3, 8.2, and 7.9 ounces for an average of 8.1 ounces. That runs at $0.98 per ounce for the $8 insert. ($1.33/$10.75). This insert is more comparable in price for an American made textile. It offers a solid day-to-day absorbency for a child without the compression of other textiles. 


Alright, I was thoroughly surprised by the stay dry duo insert and know that’s where your money is. That product is exceptional synthetic pairing the quick absorbency of microfibre and the stability of hemp. It’s everything you want in one package at a relatively affordable price. However, the natural inserts seem to lack the absorbency I expect but I know I come with a bias of a heavy wetter child. If you want natural fibre inserts, the prefolds are a better absorbency, but these are arguably trimmer and nicer to use without the folding. 

Where can I buy the Thirsties Duo Inserts?

Check with these affiliate retailers? Or visit LagoonBaby in Canada or Nicki’s Diapers in the USA.

Cloth Diaper Absorbency of the Thirsties Duo Inserts in Small and Large, Natural, Stay Dry and Regular version. #clothdiapers