Smart Bottoms Smart One 3.1 Organic AIO
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Smart Bottoms Smart One 3.1 Organic AIO

Smart Bottoms All-in-One is a one size diaper made with organic cotton and PUL outer. Proudly made in the USA!

Part Number:SBOT-3.1
Your Price:
On sale$24.65
Retail Price:$29.00
Your Savings:$4.35(15%)
In Stock

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Quantity Pricing

  • 6 - 11
  • $23.91
  • 12+
  • $23.42

Smart Bottoms’ Organic One-Size All-in-One Diaper – BEST SELLER!

Smart Bottoms' Organic, One Size, All-in-One diaper fits most babies 10-35 lbs. This uniquely designed diaper offers superior absorbency without additional bulk. The attached insert can be folded to customize where your child needs the most absorbency.

Material Contents: 100% Organic Cotton Inner/ 100% PUL Outer

Care Instructions: Prep diaper before first use by washing 6-8 times. Test absorbency by pouring water on dry diaper, should absorb instantly. If it does not, wash a couple more times and try again. Number of washes required to properly prep depend on type of washer, detergent and hardness of water. Wash and Dry Warm, No Bleach, No Fabric Softener.


  • Lined with 100% Certified Organic Cotton. Offering 10 super absorbent layers.
  • All-in-One design makes diaper changes quick and easy.
  • Patent pending design allows for quick dry-time. Most machines will dry in one cycle on warm.
  • Wide elastic around the legs decreases chance for red marks and prevents leaks.
  • 100% Made in the USA from nearly 100% sourced raw materials.
5 Stars
Love SmartBottoms
I absolutely love these. So trim. I never have leaks. Of the OS that I own, he was slower fitting into these than others (small legs) but once they fit they are my favorite go-to diaper. I bought several colors (Monster, Superhero) when they were being discontinued. Anytime I can pick up one $5 off I'm going to.
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Reviewed by:  from Virginia. on 11/20/2016
5 Stars
These are my favorite diapers. They are cute, trim and absorbent.
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Reviewed by:  from TX. on 1/4/2016
5 Stars
One of the best!
I love these diapers! They are absorbent, trim, and the solids are adorable. They seem to have durable elastics and cotton, though I've only been using then for a few months. The weight range is also phenomenal.
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Reviewed by: (Verified Buyer)  from Illinois. on 12/2/2015
5 Stars
An Awesome AIO
We have tried several different kinds of AIOs. Smart Bottoms are our favorite AIOs for daytime. They are so trim! You can put your baby in skinny jeans in these. The prints are adorable too. The only reason for 4 instead of 5 stars is how long it takes to prep these bad boys. Expect 8-10 washes =/ After that though, they are golden!
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Reviewed by: (Verified Buyer)  from Port Orange, Florida. on 12/1/2015
5 Stars
Found the love for AIO's
I never thought I was a fan of AIO's until I tried Smart Bottoms! These diapers are amazing. They are trim and very absorbent. I haven't had a leak yet! Since buying my first I have added several to my stash. I think it's safe to say I'm now hooked on these!!!
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Reviewed by: (Verified Buyer)  from NC. on 12/1/2015

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