Brain Trainer Specifications

Size Chart

Small: 18-20" Waist | 12" Legs | 30-45 lbs | Typical Age 3-5y | Absorbs 325 ml without added inserts

Medium: 20.5-23" Waist | 13" Legs | 40-70 lbs | Typical Age 5-7y | Absorbs 400 ml without added inserts

Large: 23-25" | 14" Legs | 65-80 lbs | Typical Age 7-10 y | Absorbs 540 ml without added inserts

XL: 25-27" | 16" Legs | 75+ lbs | Typical Age 10+ | Absorbs 620 ml without added inserts

Absorbency

Small: Absorbs 325 ml without added inserts

Medium: Absorbs 400 ml without added inserts

Large: Absorbs 540 ml without added inserts

XL: Absorbs 620 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.