Size Chart

Small: 16-18" Waist | 9.5" Legs | Typical Age 2 y | Absorbs 80ml without added inserts
Medium: 18-20"" Waist | 10.5" Legs | Typical Age 3 y | Absorbs 100 ml without added inserts
Large: 19-21" | 11.5" Legs | Typical Age 4 y | Absorbs 100 ml without added inserts
XL (This is the same as the Size Small for the 3-in-1 Diaper): 20-22" | 12" Legs | Typical Age 5-6 y | Absorbs 140 ml without added inserts
Absorbency
Small: Absorbs 80 ml without added inserts
Medium: Absorbs 100 ml without added inserts
Large: Absorbs 100 ml without added inserts
XL: Absorbs 140 ml without added inserts
Materials
Made in America | We go to great lengths and costs to keep our resources clean and chemical free.
Fiber Content:
Outer PUL and Tabs: 100% Polyester, with heat-based lamination, which is chemical free and a healthy and eco-friendly alternative to the standard glue-based PUL.
Inner: 100% Polyester microfiber, custom formulated for Super Undies with no chemicals
✅ Fragrance-Free & Chemical-Free: All fabrics are custom-milled for Super Undies and are free of perfumes, silicones, and harsh chemical coatings.