“I sneeze and laugh without thinking twice.”
Maria S., verified customer. The layer is built into the boyshort and never shifts — not on a bike saddle, not in a sneezing fit.
UP TO 5 PAIRS FREE+ 5 free gifts
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Founded by mother & daughter
Choose how many boyshorts you want
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★★★★★
“They fit great and give plenty of protection.”
Karin B. · Verified customer · 05-09-2026Founded by mother & daughterLivia & Julia's Cotton Leakproof Boyshorts — the same 4-layer LiviaDry, now with legs
- ✓Mother & Daughter's 6th Birthday 🎉 2+1 free, up to 5+5 free + free gifts
- ✓Stays dry for 72 hours, no wet feeling
- ✓More coverage on the upper thighs, nothing digs in
- ✓Waterproof barrier layer, nothing reaches your clothes
- ✓Fits & washes like regular underwear
- ✓Invisible under tight clothing
- ✓Way thinner than liners or pads
🚚 Order today, shipped within 24 hours from our own UK stock — free & discreet
💧Instant-dry surface
🧻High-capacity core
🛡️100% leakproof barrier
🌿Premium cotton comfort
The moment moisture hits the fabric, it's wicked away from your skin into the core. The core locks it deep inside, the membrane keeps everything contained. The outer layer is 80% premium cotton — soft, breathable and flattering.
3-layer (small leaks): think 3 to 4 liners. For “the odd drop” when laughing, sneezing or coughing, that's plenty.
4-layer (medium leaks): a thicker core, think 6 to 7 liners. For bigger leaks and longer days.
What it isn't: a solution for a full bladder in one go, or a whole night without changing. In doubt? Go for the 4-layer — you have 100 days to test it.
Protection4-layer protection
Between two sizes? Go a size smaller — the boyshort stretches and should fit snug, otherwise the legs ride up.
100days
100-day money-back guarantee. Not completely in love with your leakproof boyshorts? You get 100% of your money back.
BIRTHDAY OFFER — ENDS TONIGHT
Selling out fast — due to high demand, limited quantities available
September stockSOLD OUT
Current birthday stock92% SOLD
Next stock (full price)0% sold
Featured in
Real women, real relief
Three things we hear every single week — in their own words.
“I forgot I was even wearing them.”
Karen B., verified customer. Just underwear: soft, breathable, thinner than a liner or a pad.
“No more pads. No more odour. Just underwear.”
Judith P., verified customer. Washes like your normal clothes — hundreds of times.
Livia Dry absorption technology
Layer 1 — Instant-dry surface The moment moisture hits, this top layer wicks it away from your skin and pulls it down into the core. No damp feeling, no irritation, just instant freshness. You won't feel a thing.
Layer 2 — High-capacity core This is where the magic happens. The core absorbs up to a full cup of liquid and locks it deep inside, whether it's a small dribble or a heavier leak. So you're covered all day without changing.
Layer 3 — 100% leakproof barrier A fully waterproof membrane that seals everything in. Nothing reaches your clothes. Not a drop, not ever. This is the layer that makes Livia truly leakproof.
Layer 4 — Premium cotton comfort The outer layer is 80% premium cotton with enough stretch to move with your body. Soft, breathable and flattering — it looks and feels like the undies you already love.
3 years in the making
We're Livia and Julia — mother and daughter, and both mothers ourselves. We tried everything: liners, pads, disposable pants and the “leakproof” knickers that were already out there. All with the same problem: the moisture stayed against the skin. So we designed it ourselves. Three years and dozens of prototypes later, we had underwear with 4 layers — where the layer against your skin simply stays dry. And then came the boyshort, for anyone who wants more coverage.
★★★★★ reviews · out of 5
Write a reviewWhy leakproof boyshorts instead of a liner?
| Liner | Disposable pants | Livia Flow | |
|---|---|---|---|
| Shifts when you move | yes | – | no, stays put |
| Plastic against your skin | yes | yes | 80% cotton |
| Visible under clothing | – | yes | no |
| Buy again every week | yes | yes | no, lasts for years |
| Cost per year | ± £120 | ± £350 | one-off |
100days
The 100-day test
Wear them. Sneeze in them. Cycle in them. Wash them twenty times. Not completely in love with your leakproof boyshorts? You get 100% of your money back — to your account, not store credit.
Wrong size? We send the new one first, then you send the old one back. You're never without.
FAQs
Why did more than 40,000 women choose Livia Flow?
Because it feels like normal underwear and does what a liner can't: stay in place. Designed by Livia and Julia, mother and daughter, after three years of development.
Why is a bigger pack so much cheaper per boyshort?
Because you take more boyshorts in one box. One shipment, one packing — we pass that saving on in the price per boyshort. And because we're turning 6, we add the gifts.
Is “free” really free?
A single boyshort costs £29.95. With the Worry-Free Pack you pay for less than five and get ten. Do the maths: 10 boyshorts for £129.95 is £12.99 each.
What's the difference with the knickers?
Same 4-layer LiviaDry core, but with short legs: more coverage on the upper thighs, nothing digs in, and they stay in place during sport and cycling. The boyshort comes in the 4-layer version only (medium leaks).
What if the size isn't right?
One email. We send the right size within 24 hours, you send the first one back. Unsure beforehand? Send us your waist and hip measurements, we'll help you choose.
Is delivery discreet?
Yes. Plain box, nothing on the outside. Shipped within 24 hours from our own stock, delivery in [X–X] working days. Free shipping to the UK.
Washing and care
Just in the machine at 30°C, in the wash bag you get with your order. No tumble dryer. They last for years.
Size chart
On the border or unsure? Go a size down — the boyshort stretches and should fit snug; too loose and the legs ride up. Want certainty: send us your dress size, height and weight and we'll advise before shipping.
Don't wait like we did
This pack exists because we have stock now and because we're turning 6. At midnight tonight the offer comes down — and once a size is gone, it's gone.
Choose my packP.S. Still unsure? We get it — you've seen the adverts, all of them. That's why 100 days, money back to your account. The risk is on us, not on you.
Find your perfect fit
Answer two quick questions and we'll recommend the best size for you.
Question 1 of 2 — UK clothing size
Please select a clothing size.
Question 2 of 2 — Height & weight
Please enter your height and weight.
Your recommended size
Between two sizes? Go a size smaller. See the size chart
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★★★★★4.7/5 · 9,800+ reviews
These leakproof boyshorts go perfectly with your order
Same 4 layer LiviaDry core, but with legs. More coverage on the thighs and nothing rides up.
- ✓Stays put when you walk, cycle or exercise
- ✓No riding up, no chafing between the thighs
- ✓Ships in the same box, nothing extra to pay for delivery
Choose your bundle
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THIS PRICE IS ONLY ON THIS PAGE
We recommend one size smaller than your knickers: — · 100-day money-back guarantee
Ends in --:--:--
Sent within 24 hoursFree, tracked UK delivery
100-day guaranteeMoney back into your account
Washes at 30°CIn with your normal laundry
Plain parcelNothing on the outside
Fabric and fit
High waist. The outer layer is 80% cotton with stretch, the four-layer zone is sewn in. Between two sizes? Take the larger one.
Wash and care
Machine wash at 30°C in the wash bag that comes with your order. No tumble dryer. They last for years.
Delivery and returns
Sent within 24 hours in a plain box. You have 100 days to try them. Not for you? Your money goes back into your account. Wrong size? We send the new one first.
- 1Dry top layerHolds no moisture itself. It passes it straight down, so your skin touches dry fabric.
- 2CoreLocks it in. Around 40–50 ml, about 10 teaspoons, in the 4-layer.
- 3Waterproof membraneStops anything reaching your clothes.
- 4Soft outer layer80% cotton. The part everyone sees, and it looks like normal knickers.
Made for light leaks: the drops when you laugh, sneeze or run. With light leaks they stay dry to the touch for up to 72 hours. Not made for heavy loss.
Forget about leaks. Not about living.
No mapping out the toilets first. No liner just in case.
Three sensible reasons to stop buying pads
Cheaper
You buy them once and they wash for years. Pads are a bill that comes back every month.
Less in the bin
They go in the wash at 30°C, not in the bathroom bin.
Kinder to skin
The layer against you is dry fabric. No adhesive strip, no plastic backing rubbing all day.
The same four LiviaDry layers, with short legs. More coverage on the upper thighs, and nothing rides up.
- Fits like normal underwearShort legs that stay put when you walk, cycle or exercise.
- Dry against your skinThe top layer holds no moisture itself and passes it to the core underneath.
- Invisible under clothesThinner than a liner or a pad, also under tight clothing.
- Easy to washIn the machine at 30°C, in the wash bag that comes with your order.
- FitBetween two sizes? Go a size smaller. The boyshort stretches and should fit snug, otherwise the legs ride up.
- Four LiviaDry layersDry top layer, absorbent core, waterproof membrane and a soft outer layer. Sewn in.
- FabricThe outer layer is 80% cotton with stretch: soft, breathable and it moves with you.
- Sent within 24 hoursin a plain box with nothing on the outside.
- 100-day money back guaranteeNot happy? Your money goes back into your account, not store credit.
- Wrong size?One email. We send the right size first, then you send the first one back. You’re never without.
Other styles
The same layers, a different fit.
How to wash
Livia Flow is reusable and goes in the washing machine, just like your other underwear.
- RinseRinse them in cold water after wearing.
- Wash at 30°CIn the wash bag that comes with your order, with a mild detergent.
- Air dryHang them up. That keeps the absorbent layer working, so they last for years.
- AvoidNo tumble dryer, no bleach and no fabric softener.