Fearless Tiny Trainers
Description
• They mimic underwear with a low, contoured profile.
• They use a sleek, curved pattern that sits like real undies.
• They have a waterproof outer layer to contain accidents.
• They are less absorbent than diapers so wetness is noticeable.
• They include a slim internal pocket for optional inserts.
• Inserts can be used for travel, long car rides, illness, naps, or night.
• Side stretch tabs let kids pull them up and down independently.
• Consistent use reinforces training and avoids mixed messages.
• Switching back and forth with diapers can undermine progress.
• They offer a trim, padded fit without cloth diaper sewing techniques.
• May work for naps or nighttime when used with one or more inserts.
• A how‑to potty training e‑course is available with qualifying purchases.
Size Guide
| Size | Waist | Legs | These are typical specs and may be helpful, but less accurate. |
|---|---|---|---|
| S | 18-20" (45.7-50.8 cm) | 12" (30.5 cm) | 30-45 lbs 3-4 |
| M | 20.5-23" (52.1-58.4 cm) | 13" (33.0 cm) | 40-70 lbs 5-7 |
| L | 23-25" (58.4-63.5 cm) | 14" (35.6 cm) | 65-80 lbs 8-10 |
| XL | 25-27" (63.5-68.6 cm) | 16" (40.6 cm) | 75 lbs + 10+ |
Waist - Start 1" below the belly button and measure around the waist Legs - Measure around the leg at an angle where the undies will sit Don't Size Up! When on the edge of two sizes, sizing up can cause a looser fit and lead to leaking
About Super Undies
Product Guide
Step-by-step potty training guide covering readiness signs, popular methods compared, nighttime training tips, and how to handle regression. Expert-backed advice.
Read the full guide →
