The Knickernappies OneSize Diaper is the first of its kind: a side-snapping, onesize diaper that comes with TWO inserts made in the USA! (Yes, even our inserts are USA-made!)

Neutral assortment: mix of all colors (no pinks/purples-less blues)

Girls assortment: mix of all colors

Boys assortment: mix of colors (no pinks/purples-more blues)

Knickernappies OneSize Diapers have some great features:

• Four size adjustments to fit your baby best -- Small, Medium Short, Medium, and Large
• Tested to fit babies from about 8 lbs to 40 lbs
• Two inserts with every diaper, sizes small & large, and our inserts are Made in the USA!
• Choose between two top-rated LoopyDo inserts or two microfiber inserts.
• A scooped tummy panel & topstitching for best fit under chubby baby bellies
• Elastic on both sides of the pocket opening to hold the insert in place
• Very gentle Lastin elastic in the leg and waist - no red marks!
• Lastin elastic is long lasting and can't "go out" like regular elastic
• Two Year Guarantee on elastic and snaps.

Also introducing a new color for Knickernappies: Chocolate! A fabulous new color perfect for boys or girls.

Which insert should I choose?

Microfiber inserts are absorbant and economical. Use one for daytime or two for nights and naps. 3 layers of microfiber.



LoopyDo inserts are the #1 insert on Diaper Pin. Combining both hemp and microfiber makes them both absorbant and trim. Sewn in a loop so they dry fast, prewashed so they're ready for use after just one wash.

1. Side snaps make the diaper smooth and non-bulky in the tummy area.
2. Easier to pull pants over side-snapping diapers.
3. Harder for babies to undo by themselves.
4. For potty training, they can be pulled up and down like underwear without undoing the snaps.
5. Snaps are long-lasting and easy to care for.