Buttah O.N.E. Cloth Diaper - Clay

Our new GroVia line of AIOs are just....well...."like buttah" (channeling Mike Meyers on SNL). The inside construction and absorbency is exactly the same as our standard line, but the outer waterproof layer of TPU has been replaced with our proprietary laminated polyester velour.  Shimmery, pillowy, and quite possibly the softest thing you've ever touched. 

The O.N.E diaper is the best all in one diaper (fits 10-35+ pounds) because it comes with everything parents need to cloth diaper a baby: enough absorbency to forget boosters and doublers (even overnight), two built-in closure options, and a heavy-duty construction that is built to last.

The O.N.E. features a unique Outlast closure system that gives the user the ability to choose between Hook & Loop and Snap closures, and the ability to buy a replacement kit when your Hook & Loop wears out. O.N.E's absorbency comes from a hidden body layer PLUS our one-of-a-kind cotton, channeled soaker design that is trim yet absorbent. All with the same amazing quality you've come to know and love in GroVia products. 

No need to choose between Hook & Loop or Snap closures

With the O.N.E., you can have both! The removable Hook & Loop closure is perfect for those who love a “no-hassle” fit but want to transition to a snap closure later on.

  • Built-in extra absorbency means the perfect nightime solution
  • Lasts from birth to potty learning (fits 10 - 35 lbs).
  • No prepping - can starting using right away
  • Modular Snap In Soaker System allows for customization
  • Easy closure replacement
  • Fairly and conscientiously made in China

Washing Instructions - This is an All In One diaper, you must wash the entire diaper when soiled.

Before First Use

Remove Hook & Loop strips*. If using during daytime, wash with detergent and dry once prior to first use. If using as a night diaper, O.N.E. must be washed and tumble-dried 3-5 times before use.

Regular Wash

  • Remove Hook and Loop strips*
  • Place soiled diaper into pail
  • Wash soiled diaper every two days
  • Wash on hot or warm with full amount of a good cleaning detergent using a heavy duty cycle
  • Add an extra rinse if needed
  • Tumble dry
  • Do not use fabric softeners or water repellent diaper creams
  • Do not dry clean or iron

*For maximum longevity of your hook and loop, we recommend removing prior to washing and drying.

Use & Materials


  • Hidden Inner Layer: 100% Polyester Microfiber
  • Outer: 100% Water Resistant Polyester TPU
  • Soaker: 100% Cotton topped with 100% Polyester Microfleece
  • Body Lining: 100% Polyester Microfleece
  • Outer: 100% Water Resistant Polyester TPU (Exclusive of Trim)


  • 1 All In One Outer Shell
  • 1 Large Soaker Pad
  • 1 Small Soaker Pad

Customer Reviews

Based on 192 reviews
Kasey Z.
Wicking to the outside

It's a beautiful, soft diaper but I think the buttah material allows mild wicking to the outside of the diaper. My daughters diaper is very slightly damp on the outside each morning. It's been washed plenty of times so should be fully absorbant by now.

Clare Y.
My twins sleep through the night now!

Amazing! My twins have never pooped at night, but have been waking up once a night with full wet diapers for months now and no real interest in being fed. So we bought a collection of O.N.E diapers to use overnight hoping the babies wouldn't need changed until morning AND saving us 4 disposable diapers a day.
It worked!! My nearly 8month old twins have been sleeping through the night ever since we got these. Even my son, who is a heavy wetter has never leaked once,it's amazing!
Not to mention the Buttah diapers are SO cute, I can't handle their adorable fluffy butts 😍

Kaitlyn C.
So cute & great performance

During the day I just use the ONE diapers with the largest soaker pad they come with and not both, they do a good job with holding moisture but not making my baby feel wet when I change him. These are so soft and the yarrow yellow is a more mellow color in person than in photos, this might be my fav color. I never use the hook and loop, the snaps are great