The Starter Set
3 pairs
$45
$15.00 a pair
- 3 Leapproof Briefs
- 30-Night Leak-Test
- Free US shipping
- No free gifts
Leak-resistant underwear for lighter leaks · US sizes 0–20
Go ahead and sneeze.No crossing your legs first.
Soft black briefs with a leak-resistant lining built in, so there’s no pad. Test them on your own sneeze for 30 nights. If they don’t hold, get your money back and keep the pairs.
Find my size + setAbout 2 minutes · No email needed to see your match · Sets from $45
- Free size swap
- Free US shipping
- Pay once, no subscription
Sound familiar?
The moments you can stop bracing for.
Usually it’s not a puddle. It’s a few drops at the worst possible time, and a little wet patch you hope looks like sweat. These are made for exactly that: a few drops to a small splash.
- 01
The sneeze you feel coming.
You cross your legs, squeeze, and hope. Same with a cough, or a laugh that goes on too long.
In Leapproof, you sneeze and carry on.
- 02
The trampoline park with your kids.
You think twice, jump once, and end up running for the bathroom.
In Leapproof, you stay on and jump with them.
- 03
Double-unders and box jumps.
You pee before class, then again, and still skip the rope.
In Leapproof, you pick up the rope with everyone else.
- 04
The run you used to love.
You pee right before you leave, then spend the whole run thinking about it.
In Leapproof, you think about your pace instead.
Every moment here comes from women describing their own leaks, in their own words.
Common? Yes. Normal? No.
It gets brushed off as “just part of it.” It isn’t.
Leaking is “NEVER considered normal.”2Ridgeview Medical Center
You’re not broken. You had a baby, you lift heavy, or perimenopause moved the goalposts. It’s plumbing, not a verdict on you.
If you can, see a pelvic floor physical therapist. Until then, you shouldn’t have to sit out your own life.
In their words
Don’t take our word for it.
Take theirs.
Women who were tired of crossing their legs before every sneeze, on what changed.
1Soft, smooth waistband. No lace, no trim.
2Cut like regular briefs.
What they are
They look like plain black briefs. On purpose.
No pad to stick in, nothing to swap out. The lining is part of the underwear.
- Soft and stretchy95% regenerated fiber (viscose-type), 5% spandex.
- Wash, wear, repeatMachine wash cold in a mesh bag and wear them again.
- US sizes 0–20Sized by your hip measurement (S to 4XL).
- Free size swapWrong size? We’ll send your new size free.
Why Leapproof
Not a diaper. Not a pad. Not a secret.
A lot of leak-proof brands whisper about it and hope you never ask questions. We’re for the woman who still wants to sneeze, laugh and jump out loud, and who wants to know exactly what she’s buying.
Looks and feels like regular underwear
Wash, wear, repeat
Made for women who still lift, run and jumpOften sold for older women
Says “pee” out loud, with zero shameRarely
Tells you straight: made for lighter leaksOften promises more
Real reviews, the bad ones includedNot always
No fake doctors or made-up foundersNot always
No “50% off” sale that never endsNot always
30 nights to test them, money back, keep the pairsNot always
“The usual leak-proof brands” sums up patterns we found looking at the biggest US leak-proof underwear brands and their ads in October 2026. Not every brand does every one.
What we stand for
Five things we won’t budge on.
- 01
Common, not normal.
We’ll never tell you leaking is just part of having kids or getting older. It’s common. It isn’t something you have to live with quietly.
- 02
Say pee.
Plain words, no whispering, no shame. You leak on a sneeze. So do a lot of the women in your spin class.
- 03
Keep moving.
Made for the class, the run and the trampoline. Not for sitting it out on the side.
- 04
Honest or nothing.
Real reviews, the bad ones too. No fake doctors, no fake sales, no promises bigger than the product.
- 05
Your pelvic floor comes first.
A pelvic floor physical therapist can help fix the cause. Our underwear is backup while you get there, not a replacement.
The 30-Night Leak-Test
Sneeze in them. Laugh in them. Then decide.
Wear them through your real moments for 30 nights, starting the day they arrive. If they don’t hold, email us your order number and what happened within your 30 nights. We refund your whole set, processed within 3 business days. You keep the pairs. Nothing to send back.
Don’t take our word for it. Test them on your own sneeze.
Find my size + setOne claim per customer. This is on top of your legal rights. US: the 30-Night Leak-Test is a limited warranty. It gives you specific legal rights, and you may also have other rights which vary from state to state. Full terms
What happens next
Your first 30 nights.
- Today
Take the 2-minute quiz. Get your size and your set, without guessing off a size chart.
- 1–3 business days
We pack your set and email you a tracking link.
- About 6–10 days after you order
Your pairs arrive. Wash them once, and your 30 nights start today.
- Week 1
A sneeze sneaks up on you. Afterwards you notice you didn’t cross your legs.
- Week 2
You say yes to the trampoline. The spare underwear comes out of your gym bag.
- Week 3
Some mornings you forget which underwear you have on. That’s the whole point.
- Night 30
Keep them, and maybe grab a few more for the wash. Wrong size? Email us within your 30 nights and we’ll send your new size free. If they didn’t hold, email us. We refund your whole set and you keep the pairs.
Fit
Sized by your hips, not a guess.
Our letter sizes won’t match your other underwear. So go by one number: your hips at the widest part. Your usual US size is listed first.
The Fit Promise
Wrong size? We’ll send your new size free. Nothing to send back.
Email us within your 30 nights. One free size swap per order.
| US | Our size | Hips |
|---|---|---|
| 0–2 | S | up to 36″ (91 cm) |
| 4–6 | M | 36–38″ (91–96 cm) |
| 8–10 | L | 38–40″ (96–101 cm) |
| 12–14 | XL | 40–44″ (101–111 cm) |
| 16 | XXL | 44–47″ (111–120 cm) |
| 18 | 3XL | 47–51″ (120–129 cm) |
| 20 | 4XL | 51–54″ (129–138 cm) |
Between two sizes? Pick the smaller one. A loose pair can gap at the legs. Too snug? Email us and we’ll send the bigger size free.
Over 54″ (138 cm)? We don’t make your size yet.
Pick your set
One pair on, the rest in the wash.
So you’ll want enough to rotate. The more pairs you get, the less each one costs, down to $9.90 a pair.
The Everyday Rotation
5 pairs
$59
$11.80 a pair
Save $16 vs. $15 a pair
- 5 Leapproof Briefs
- Free Wash Bag ($12.95) for the machine
- 30-Night Leak-Test
- Free US shipping
Best value
The Full Rotation
10 pairs
$99
$9.90 a pair
Save $51 vs. $15 a pair
- 10 Leapproof Briefs
- Free Wash Bag ($12.95) for the machine
- Free Wash Sheets ($19.95), detergent in a sheet
- 30-Night Leak-Test
- Free US shipping
A pair a day for a week, plus spares.
Get 10 pairsYou pick your size at checkout. Prices in US dollars.
- Free US shipping
- Pay once, no subscription
- 30-Night Leak-Test on every set
Not sure how many, or which size? The quiz works it out from your week and your hips in about 2 minutes. No email needed to see your match.
Find my size + setFAQ
Straight answers.
If your question isn’t here, email hello@leapproof.com. A real person answers.
How much can they hold?
They’re made for lighter leaks: a few drops to a small splash on a sneeze, laugh or jump. If it’s more than that, these may not be enough on their own, and a pelvic floor physical therapist is worth a chat.
I already own period underwear. Why these?
Keep them for your period. These are for the sneeze, the laugh and the jump the rest of the month: plain black briefs from $9.90 a pair, so you can own a full week’s worth instead of one “just in case” pair. Sized by your hips (US 0–20), with 30 nights to test them.
Will they feel bulky or show under leggings?
No pad, so nothing bulky. They’re cut like regular briefs with a soft, smooth waistband. Wear them under leggings, jeans or work pants.
How do I pick my size?
Measure around the widest part of your hips and use the size chart. Your usual US size is listed next to each one. Between two sizes? Pick the smaller one.
Can I wear them to train or run?
Yes, for training, a run or a big day out. They’re made for lighter leaks, so if you leak more at night, they may not be enough on their own.
Can I wear them on my period?
They’re made for lighter leaks, not as period underwear. On your period, use what you normally use.
How do I wash them?
1. Rinse them in cold water after you take them off.
2. Zip them into a mesh wash bag (the Wash Bag comes free with 5 or 10 pairs) and machine wash cold (86°F / 30°C max) on a gentle cycle.
3. Use a mild detergent with no fabric softener, or the Wash Sheets.
4. Hang them to dry. No dryer, no bleach, no ironing.
Heat and softener are hard on the lining. Skip both and your pairs are made to be worn and washed again and again.
Will they smell?
Wash them after every wear, like any underwear, and follow the steps above. Skipping softener keeps the lining soaking up properly.
Have they been lab tested?
Not by a third-party lab yet. So we don’t claim things like “PFAS-free” or a number of milliliters. When we have lab results, we’ll post them here. What we can tell you: 95% regenerated fiber, 5% spandex.
Is this a subscription?
No. You pay once for the set you pick. Nothing renews, and we never charge you again unless you say yes.
When will they arrive?
We pack your order in 1–3 business days, and most orders arrive about 6–10 days after you order. Shipping is free. With 10 pairs, the Wash Sheets come in a separate parcel and may arrive a few days apart.
What if they don’t work or don’t fit?
Doesn’t hold: email us within your 30 nights and we refund your whole set, processed within 3 business days. You keep the pairs. Wrong size? We’ll send your new size free. Nothing to send back. One Leak-Test claim per customer, one free size swap per order.
Do I have to take the quiz?
No. If you know your size, pick a set and choose your size at checkout. The quiz is the quickest way to get your size and the right number of pairs: about 2 minutes, and no email needed to see your match.
Who’s behind Leapproof?
A small brand from Melbourne, Australia, started because women keep being told leaking is just part of life. Every email is answered by a real person: hello@leapproof.com.
Laugh at the whole joke.
Take the quiz (about 2 minutes). Test them on your own sneeze for 30 nights. If they don’t hold, you get your money back and keep the pairs.
Find my size + setNo email needed to see your match · Free US shipping · Pay once, no subscription
Not a treatment. It’s underwear. For heavier leaks, these may not be enough on their own. If leaking is new, painful or getting worse, talk to a doctor or a pelvic floor physical therapist.
¹ A review of studies of leaking between 6 weeks and 1 year after giving birth. Moossdorff-Steinhauser et al., International Urogynecology Journal, 2021. PMC8295150. Research results, not Leapproof customers.
² Ridgeview Medical Center, “Coughing, laughing or sneezing shouldn’t cause peeing,” ridgeviewmedical.org. The words “NEVER considered normal.” are copied from this page.