Leak-free Cloth Diapering Systems Since 1991!


The Leak-free All-in-Two Cloth Diaper Solution

Why Choose a One Size?

The Wizard Duo – One Size diaper is your most economical cloth diaper option – with only one investment in your stash! The One Size option adjusts to fit from 10 lbs until 35 lbs, the average potty training age. Fully adjustable with a double row of waist adjustment snaps and a set of rise adjustment snaps, this diaper will comfortably close around your baby.

Also, consider our Newborn Duo Diaper for the most comfortable fit around your new baby, before using your One Size diapers. Learn more about the Newborn Duo Diaper!


One Size Duo Insert

  • Snaps in and out of One Size Duo Cover
  • Elastic all around for superb containment
  • Expands and contracts to fit inside the Duo Cover
  • Fits from 10 to 35 lbs
  • Available in Unbleached Cotton Terry, Bamboo Terry, Stay Dry, and Stay Dry – Night Time!
    Read more about our Fabrics.

One Size Duo Cover

  • Covers the One Size Duo Insert
  • Elastic all around for superb containment
  • Only needs to be changed once every 3-4 diaper changes
  • Completely adjustable to grow with your baby from 10 to 35 lbs
  • Available in a variety of colors and prints!