The 3-in-1 Waterproof Undies; A Diaper, Trainer And Swim Diaper In 1
Description
• Designed for older kids and big kids who need more than standard options.
• Can be used as training pants for delayed potty training.
• Can be used as daytime diapers for incontinence or special needs.
• Can be used as a waterproof cloth diaper for bigger kids.
• Can be used as a reusable swim diaper when worn without inserts.
• Allows children to feel wetness to support body awareness.
• Helps strengthen the brain–bladder connection and encourage progress.
• Supports sensory learning, useful for autistic children or sensory differences.
• Soft and comfortable against sensitive skin.
• Slim, trim appearance for dignity and discretion under clothing.
• Boxer/brief-style waistband for added discretion.
• Waterproof through the front and back wet zone.
• Two layers of built-in microfiber absorbency.
• Internal pocket for adding extra absorbency as needed.
• Made-to-order sizing for big kids and older children.
• Reusable and cost-effective over time; often stays the same size for years.
• Multiple uses: daytime diapering, swim diaper, waterproof underwear, cover over disposables, nap time, nighttime with 1–2 inserts.
• Choose pull-up style or snap closures.
• Tabs made from stretchy Lycra.
• Absorbency capacity: S 200 ml | M 250 ml | L 280 ml | XL 340 ml.
• Compatible with step-up inserts and soaker bombs.
• Materials — Outer shell: 100% polyester fused with PUL.
• Materials — Inner liner: 100% polyester.
• Materials — Built-in absorbency: polyester.
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
Shop the best baby swimsuits and swimwear for 2026. UPF 50+ protection for pool and beach. Browse EasyTot's swim picks!
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