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Thirsties One-Size All-In-One Diaper

Size Guide
Thirsties One-Size Size Guide

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Size Weight Age
one size 8 - 40 lbs (4 -18 kg) 0 - 36 months


  • One-Size All-In-One Features and Benefits
    • More absorbent and dries 3 times faster than the Duo All In One
    • Convenient, trim fitting, and absorbent
    • Goes on in one simple step - cloth diapering doesn't get easier
    • One size diaper provides a customizable fit for most babies from birth to potty
    • 4 total layers of absorbent microfiber terry, a microfleece liner and a reliable waterproof exterior
    • Available with hook & loop or NEW snap configuration with two rows of snaps
    • Gentle elastic around legs and waist provide protection against leaks
    • Stay-dry microfleece liner provides wetness protection

    Thirsties new One Size All in One reusable diaper truly challenges the convenience and trim-fit of a disposable diaper. This diaper offers absorbency, waterproof protection, and adjustability all rolled up into a stylish, comfortable and extremely effective cloth diaper.

    A built-in, three-layer microfiber terry soaker absorbs an amazing seven times its weight in liquid. The soaker is topped with our stay-dry microfleece which keeps your baby feeling dry. An additional layer of terry lies between the microfleece and PUL body of the diaper providing a last line of defense. The soaker is sewn in on one side (at the top of the diaper), which makes adding extra absorbent layers a cinch and tremendously decreases drying time…it’s the fastest drying diaper we’ve ever created!

    Both hook & loop and snap closures are available on Thirsties One Size All in One. While many families prefer hook & loop closures because of the simple, secure fit they provide, snap closures do have a few advantages of their own. They are practically indestructible and are more unyielding than our hook & loop closures, making them more challenging to unfasten for a toddler who prefers to go naked.

    All in all, Thirsties One Size AIO gets a BIG thumbs-up from your wallet, your family, your daycare facility, and occasional caretakers alike.

    Thirsties One-Size All In One Diaper Features

    Proudly manufactured in the USA.
  • Content

    Outer: 100% polyester with waterproof urethane coating
    Inner liner: 100% polyester microfleece
    Inner absorbency :1 layer of microfiber terry
    Inner soaker: 100% polyester - 3 layers of microfiber terry topped with layer of microfleece

    Care & Use

    Before use: Wash 1-3 times using a cloth diaper safe detergent.

    At every wash cycle:

    -Prewash on warm

    -Wash on hot

    -Add another rinse on warm.

    -Hang dry or dry in the dryer on low. Turning the diapers inside out may speed dry times. If the diapers are stiff after line drying, you can throw them in the dryer on low heat with some wool dryer balls to soften them.

    Important notes:

    Use enough water to soak and cover the diapering items and allow them to agitate.

    Please avoid the following:

    Laundry boosters/additives

    Sanitize or Whites cycles on HE machines

    High heat in the dryer

    Pure Soap


    These practices and/or additives can void the warranty on your Thirsties products.

    *A 15 minute cycle on hot in the dryer once a month is beneficial to lamination, and will not void your warranty.

Customer Reviews

Based on 29 reviews
I love this diaper

Easy to use and launder. So soft and cute!


They are awesome!!

My FAVORITE diaper!

The print is adorable and the quality is the best. This is my very favorite diaper so far in the nearly five years that we have been using cloth full time for our three children. I definitely recommend this one to anyone who asks. :)


My son thinks these are comfy- BM right after we put it on the first time, lol. It's fairly trim, and I love that there is a secret pocket in the underside of the sewn in soaker that you can use to boost the absorbency.

Great diaper!

We are GroVia people and have used bumgenius in the past, but didn't fall in love. I really like these diapers because they dry quickly and work on my 4 month old and my 2 year old. They wash clean also. Thinking about trying their 'natrual' AIO since I was so impressed with these, and their adorable outdoors designs!!


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