Potty Training Underwear

We're parents too. After struggling with diapers, confusing methods, and too many messes, we realized there was a better way. We teamed up with pediatricians and designers to create training underwear that actually helps kids learn — instead of just managing accidents. Thousands of parents later, it's still the product we wish we had from day one.

We're not diapers. We're not pull-ups. We're not plastic. UpAiry is real underwear that helps your toddler potty train faster — with fewer messes and more wins. Feels like real undies, absorbs small accidents without bulk, builds your child's confidence, and supports popular methods like Oh Crap. Machine washable and reusable.

Just rinse if needed, toss in the wash, and dry. They're built to survive hundreds of washes — because, let's be real, you'll need them to. Machine washable on warm or cold, delicate setting where possible. Still super soft after hundreds of washes.

UpAiry underwear is designed primarily for daytime training where your toddler is awake, aware, and learning body cues. That said, many parents use UpAiry for night time and find success while transitioning out of diapers. For heavy night wetting, pair with a waterproof mat or extra inserts for extra peace of mind.

Made from premium fabrics and a waterproof outer layer, UpAiry features six layers of eco-friendly materials designed to be gentle on the skin, provide maximum absorbency and protection, and include a leakproof outer layer with fun cotton designs.

The inner layer is high-quality undyed and unbleached cotton — breathable, comfortable, and allergen-resistant. The middle layers use absorbent cotton and thick gauze for high absorption. The outer layer uses TPU waterproof fabric — free from harmful solvents and chemicals.

Unlike diapers or pull-ups, the inner layer doesn't absorb wetness — it allows your child to feel discomfort, aiding awareness, while preventing leaks. The second layer acts as a safety net to reduce any potential leaks. You get the best of both worlds: a comfortable design for your child and a less stressful potty training experience for the whole family.

Our sizes are based on weight. If you're unsure or in between weights, size down as the underwear is stretchy. Small: 1–2 years (7–20 lbs). Medium: 2–3 years (22–35 lbs). Large: 3–4 years (35–55 lbs).

Yes! All UpAiry underwear is unisex and works great for both boys and girls. The absorbent area is built where it's needed most, and the design is neutral enough for any toddler to feel like a big kid in style.

We design our underwear with a triple-layer absorbent core that helps reduce leaks and messes. However, they're not leakproof in the way a diaper is. If your child has a larger accident or wears them overnight, there may still be some leakage. These are best for daytime accidents during active potty training.

Returns are easy. Try UpAiry Underwear, and if you don't love it within 75 days we'll happily refund your order. We strongly believe in the quality of our underwear and have helped potty train thousands of toddlers. To initiate a return, contact our customer service team at hello@upairy.com.

All orders are fulfilled and shipped within 1–2 working days. Delivery times: United States 4–8 days, Europe 4–8 days, Australia 4–8 days, United Kingdom 4–8 days, Canada 4–8 days, Rest of world 5–10 days. All orders come with tracking information once shipped.

No — only one discount or promotion can be used per order. If multiple offers are available, the one with the greater value will apply automatically. Free shipping is still available if your order meets the minimum threshold and no discount code is applied.