OS diaper

plural OS diapers

1. CanadaUSabbreviationslanguncommonAbbreviation of one-size diaper (“a type of cloth diaper which can be adjusted and lengthened to match the baby's growth, thus allowing the diaper to be worn from around birth (by a newborn) to potty-training age”).

   The one size diaper (OS) is the most available cloth diaper on the market. The OS diaper is marketed for kids 8-35lbs (sometimes 10-40lbs), or birth to potty training. One size diapers fit most kids. There is always an exception. Some kids are small and some kids are big.

   2021, Bailey Bouwman, Cloth Diapers: The Ultimate Guidelines to Textiles, Washing & More, Simply Bailey Social Marketing, →ISBN, page 21

   2 more examples

   Depending on the shape of your baby, OS diapers may not fit the entire range listed. For example, a lot of OS cloth diapers claim they fit from birth to potty training. This is sometimes the case but not always. My first child didn't start to fit (very well) into his OS diapers until he was around 11-12 pounds.

   2015 January 30, Ashley Wilson, “One Size Cloth Diapers vs Sized!”, in MyGreenNest

   Want my honest opinion? If you're on a tight cloth diaper budget, I'd stick with OS diapers (because Buttons OS diapers DO fit newborns and my 2.5 year old toddler). BUT, if you plan on cloth diapering more than one child and have the extra money, I’d totally take some of your budget and get some of the Buttons sized diapers…either newborn, super, or some of each!

   2017 September 26, Becky Ann, “Why you should consider sized cloth diapers (Buttons Newborn and Super Cover Review)”, in The List Mama