In-depth baby product reviews led by a Pediatrician

Thirsties Newborn All in One Review

Itty bitty AIO sized perfectly for the first few months of life, but not much longer
thirsties newborn all in one cloth diaper review
Credit: Abriah Wofford
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Price:   $17.25 at Amazon
Pros:  Smaller sizing, natural fibers, simple to use
Cons:  non-wicking fabric, short usage period
Manufacturer:   Thirsties
By Abriah Wofford & Juliet Spurrier, MD  ⋅  Apr 20, 2022
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47
OVERALL
SCORE


RANKED
#8 of 11
  • Absorbency - 35% 2.0
  • Fit/Leakage - 30% 6.0
  • Comfort - 20% 5.0
  • Ease of Use - 15% 8.0

The Skinny

Thirsties make a wide variety of cloth diaper options, and they are trusted to be reliable and durable by many users. Their Newborn All In One is an option created specifically for small infants during the first few months of life when they might not have grown into regular cloth diapers yet. With an all-natural fiber interior and a soft waterproof polyester outer, it will not irritate sensitive newborn skin. This AIO has found the perfect balance between absorbency and bulk for tiny tushes, and we recommend this diaper to anyone looking to use cloth from the very beginning. Other diapering considerations could include using a combination of cloth and disposable diapers for different tasks.

Editor's Note: We updated this review on April 20, 2022, with new sections designed to help you in you buying decision.

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Pros Smaller sizing, natural fibers, simple to useHighly absorbent, soft fabric, no leakageTrim fit, easy assembly, easy to get good fitAssembly free, option for extra inserts, quick absorbencySoft lining, inexpensive, large pocket
Cons non-wicking fabric, short usage periodBulky, requires stuffingFree floating liner, single gussetNon-removable bulk, single gusset, line dry onlyRequires stuffing, bulky
Bottom Line Itty bitty AIO sized perfectly for the first few months of life, but not much longerA high-quality pocket diaper with absorbency superpowers, but requires extra effortEasy to use, easy to clean diaper perfect for on the go cloth diaperingEasy to use diaper perfect for first time cloth users, but has a bulkier fitFirst-rate pocket diaper that shows strong absorbency performance and a low price tag, but not as soft
Rating Categories Thirsties Newborn A... Rumparooz Pocket Flip with Stay Dry... bumGenius Freetime Imagine Baby Pocket...
Absorbency (35%)
2.0
9.0
7.0
6.0
8.0
Fit/Leakage (30%)
6.0
9.0
7.0
6.0
5.0
Comfort (20%)
5.0
8.0
7.0
5.0
4.0
Ease of Use (15%)
8.0
4.0
7.0
8.0
6.0
Specs Thirsties Newborn A... Rumparooz Pocket Flip with Stay Dry... bumGenius Freetime Imagine Baby Pocket...
Style AIO Pocket Hybrid/AI2 AIO Pocket
Material Natural & Synthetic Fiber: Cotton, Hemp, Polyester Synthetic Fiber: Polyester, Polyamide Synthetic Fiber: Polyester, Nylon, Spandex Synthetic Fiber: Polyester, Nylon, Spandex Synthetic Fiber: Polyester, Nylon
Weight Range 5 to 14 Lbs. 6 - 40+ Lbs. 8 to 35 Lbs. 8 to 35 Lbs. 8 to 35+ Lbs.
Gusset Single Double Single Single Single

Our Analysis and Test Results

Founded in 2014 by Erin Kimmett, Thirsties is a Colorado company, born from the desire to create the perfect cloth diaper cover. In the early months of the company, covers were patterned, cut, and sewn by Erin on her dining room table. With a few tweaks along the way, the company grew into one of the most popular cloth diapers on the market. Still made in Colorado, the Thirsties company strives to make it easy to choose cloth, creating an affordable combination of social and environmental consciousness.

Performance Comparison


thirsties newborn all in one cloth diaper review - picture of the thirsties newborn all in one laid out. the inserts...
Picture of the Thirsties Newborn All In One laid out. The inserts are sewn in at the top of diaper and are made of 55% hemp and 45% organic cotton.
Credit: Abriah Wofford

Absorbency


This tiny diaper is meant to be worn by tiny babies and only will capture a tiny amount of urine. To add to this, the inside of the diaper is all-natural fabrics and has no wicking lining. Thus, this Newborn AIO scored near the bottom of the group in our absorbency tests, beating out only a swim diaper.


However, we did a second round of testing with a reusable microfleece liner, and the diaper performed relatively well, especially considering its small comparative size.

Likes


There's a lot to like about the Thirsties Newborn diaper compared to the cloth diaper competition. It has double hemp/organic cotton inserts that are attached to the diaper at one end, as well as an additional layer sewn into the lining for added absorbency. We like that this allows you to layer the inserts differently depending on your baby's absorbency needs. We love the all-in-one style that makes things easy right from the get-go; there is nothing to snap or fold before you can put the diaper on the baby. Laundering aside, it is just as easy to use as any disposable diaper. When it comes to cleaning the diaper, the whole thing can be tossed in the machine to wash and dry, although we recommend line drying all your cloth diaper covers.

thirsties newborn all in one cloth diaper review - the cotton lining covers the inner edge of the gusset, keeping it...
The cotton lining covers the inner edge of the gusset, keeping it soft and smooth against baby's legs.
Credit: Abriah Wofford

The best part about this diaper is that it eliminates bulk for little newborns. The smaller cover and thinner inserts give you precisely what you need to handle newborn waste, no more, no less. The soft cotton lining reaches the outer edge of the single gusset and is cozy against sensitive skin. The outer fabric of the cover is waterproofed polyester and is also very soft so as not to cause irritation. It has two snap positions for the rise, and four for the waist, allowing you to adjust the fit for any baby within the weight range. There is only one row of snaps around the waist. While we usually prefer two, this diaper is so small that we can't imagine trying to fit a double row of snaps in this space. We feel that one row is sufficient for this purpose.

thirsties newborn all in one cloth diaper review - the single row of snaps was enough for us to feel like we could get...
The single row of snaps was enough for us to feel like we could get a secure fit on baby.
Credit: Abriah Wofford

Dislikes


There are a few downsides to buying such a situation-specific diaper. You are likely buying this because you want it to fit a small infant. While it does this job very well, it will only fit a small infant. The max weight for this diaper is 14 lbs, a number which most babies will reach within the first 3-4 months. The small size of these diapers does not mean they cost less. The short usage span means you will have to completely rebuild your stash soon after birth, nearly doubling the cost of putting diapers on your baby.

Not intended to hold as much liquid as we tested it with, the...
Not intended to hold as much liquid as we tested it with, the Thirsties Newborn All In One did not perform well in its original test.
After testing with a reusable microfiber liner in place, the...
After testing with a reusable microfiber liner in place, the absorbency test looked much better.

Also good to keep in mind is that the inserts and lining of the Newborn All In One are natural fibers. Fabric such as this can be a good thing in terms of baby and eco-health, but on the flip side, natural fibers tend to have poor wicking capabilities. To remedy this issue, we recommend purchasing a reusable microfiber liner. We tested this diaper with and without, and above, you can see how much of a difference microfiber can make. We must admit that the first result can be somewhat deceiving. We tested all diapers with 100 ml of mock urine no matter what, so we could get an apple to apple comparison between products. The Thirsties Newborn diaper is intended for smaller babies than we were basing our tests on and not meant to hold that much liquid. Even so, the diaper was able to contain all the mock urine during our in-lab testing. With the added microfiber liner, the diaper performed relatively well.

thirsties newborn all in one cloth diaper review - the two hemp and cotton blend inserts have good absorbency but...
The two hemp and cotton blend inserts have good absorbency but aren't fantastic at wicking.
Credit: Abriah Wofford

Should You Buy the Thirsties Newborn All In One?


Necessity is the mother of invention, and the Thirsties Newborn All In One is a diaper that was born with a specific need in mind. Designed to fit babies during the first few months of life when they are so small that regular-sized cloth diapers would look clownish on them. If you have a strong aversion to using disposable diapers to fill this gap, we suggest giving this niche product a try. It is easy to use and functions well, making it a cloth diaper we would use on our babies or recommend to a friend.

What Other Cloth Diaper Should You Consider?


Abriah Wofford & Juliet Spurrier, MD

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