Thirsties ONE SIZE All In One

Availability: In Stock



  • More absorbent and dries 3 times faster than the Duo All In One
  • Goes on in one simple step - cloth diapering doesn't get any easier
  • One size diaper provides a customizable fit for most babies from 8 to 40 lbs.
  • 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.

Outer: 100% polyester with waterproof urethane coating
Inner Liner: 100% polyester microfleece
Inner Absorbency: 100% polyester - 1 layer of microfiber terry
Inner Soaker: 100% polyester - 3 layers of microfiber terry topped with a layer of microfleece

Proudly manufactured in the USA


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


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


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