Your favorite Happy Heinys ONE for ALL one size diaper available in Hook & Loop or Snap closure. Choose our New Improved Style that fits slender to average babies excellent as well as still fits up to 35lbs. Or choose our Original One Size for our chunkier babies. The Original One Size are Made to Order, this could add 5 business days before it ships to you. Not sure which style you should try? We suggest that unless your baby is on the chunkier side sticking with the New & Improved sizing.

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Better Fit for Babies: The ONE for ALL diaper’s rise has been shortened a bit to fit smaller babies better, now offering a better fit for both big and small babies, and every size in between!
Less Bulk. Less Drooping: The improved One-Size now features a smaller belly panel and reduced width between the leg openings. This styling change means less bulk in the bottom and less drooping for a better look, fit and feel!
Leak-Resistant: Happy Heinys works to make diaper changes as easy as possible. The new leak-resistant design offers improved performance over the original One-Size, especially when worn by slender to average weight babies.
Longer Life: Happy Heinys diapers include fantastic elastic bindings that are easy to replace if needed. With this value-added assurance, the investment in reusable cloth diapers lasts even longer, through multiple changes and multiple siblings, if necessary!
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Happy Heinys has worked hard to earn the trust of thousands of families with their original sized pocket diapers. We are thrilled to bring you that same quality and measure of success with our one size pocket diapers, available in both hook and loop or snap closure. Happy Heinys one size pocket diapers use only the best materials, from the custom milled fleece to industrial strength notions, to create a diaper that will fit your baby from about 8-35 pounds. With 4 sizing options, easily accessible on the front of the diaper by using durable snaps, we can offer a precise fit for your baby's growth stages. Our adorable prints have been made to the same specifications as our popular sized diapers, which means they are not going to wick urine during nap time or nighttime use.
Normally our One Size pocket diapers come with 2 microterry inserts. However, through our store we are giving you the option of how you would like to purchase your One Size diapers. You have the option of No inserts and have $2 deducted from each diaper. You may decide you prefer to use hemp so you have an option of buying one of our hemp stuffins. You may decide to use my favorite, the infant size cotton prefold. Finally you may go with the normal way of purchasing our One Size diapers by having the 2 microterry inserts included.
You do however have to pick one of the insert options. If you do make the choice to pick No Inserts you will NOT receive any inserts for your diapers. For the Hemp Stuffins and the Infant prefold you will receive only 1 of these inserts and no microterry inserts. Or again you may choose the 2 microfiber.
With your one size pocket diaper purchase, you will receive a set of two microfiber inserts, which are 3 layers each. For BEST RESULTS ALWAYS use the large insert. When the diaper is on the smallest setting fold one end of the insert over. For boys put the insert into the diaper with the folded end up front. For girls place the insert into the diaper with the folded end at the back. This will give you 6 layers of absorbency right in the wet zone where it is most needed. The smaller insert should be used as a doubler for added absorbency as needed creating 6 total layers of thirsty microfiber! The unique design of our diapers allows for additional stuffing if needed. A Hemp Stuffins provides an absorbent boost when paired with the included microfiber inserts. Stuffins fill the width of your one size diaper, and also inch for inch absorb a great deal of moisture for those times when a diaper needs to last. Place one of our thirsty microfiber insert on top of the stuffin, all inside the one size pocket for naptime or nighttime to complete a system that compliments both fit and function.
Through the Happy Heiny Store we offer the One Size Diaper with your choice of inserts. We understand that sometimes within our large diaper stashes we have plenty of microterry inserts and other times maybe we prefer to use hemp or cotton prefolds and sometimes we really like our microterry inserts so go ahead and pick the style of inserts you would like to be sent along with your one size diaper. By selecting a different style of insert you will not receive the microterry inserts. You will only receive the selected insert in the stated quantity.
Through the Happy Heiny Store we offer the One Size Diaper with your choice of inserts. We understand that sometimes within our large diaper stashes we have plenty of microterry inserts and other times maybe we prefer to use hemp or cotton prefolds and sometimes we really like our microterry inserts so go ahead and pick the style of inserts you would like to be sent along with your one size diaper. By selecting a different style of insert you will not receive the microterry inserts. You will only receive the selected insert in the stated quantity.
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Finally a TRUE One Size Reusable Diaper!
Fits most babies from 8 lbs. to 35 lbs. - One diaper from birth to potty! |

If you love the idea of a velcro closure on your diapers, but dread the "diaper chains" that occur when the laundry tabs fail and your diapers stick to each during washing and drying, our no-fail laundry tabs will be a breath of fresh air. Leading the industry with enclosure tabs that fold back on themselves our goal is to make laundering, stuffing and using your diapers that much easier for today's busy family.
In addition to a great fit, the assurance of a high quality USA made product, and a company that promises the best in customer service, we also priced our diapers with your family budget in mind. Our diapers are designed with easy-to-replace elastic, meaning if your elastic wears out during the course of your diapering years, a few stitches and a seam-ripping tool is all it takes to make the diapers like-new again. Additionally, our snaps on the front of the diaper, to adjust the size, and also the enclosure snaps are under a lifetime guarantee by the original owner, we ensure your diapers are built to last from top to cute baby's bottom.
Make your baby's heiny a Happy Heiny today!
Linda's Notes: We developed our size range with the idea that a full term newborn will likely not fit into our one size pockets at 8 pounds, however, we have confidence in the fit on an 8 pound baby who has reached the 4-6 week mark. The key is to have a little weight in the thigh area, which most new babies do not acquire for a few weeks. If you are looking for a more precise fit to prevent those infamous "newborn bowel movement leaks", try our Mini One Size, which have passed customer testing on newborns as small as 4 pounds. The mini one size are a perfect lead in to our one size diapers, and provide the ease of use that a pocket diaper possesses. Don't look at the mini one size as just a diaper to last for 4-6 weeks, the 15 pound threshold may be achieved during that time, or may take several months, making them a wise investment for those early days for your baby.