KISCHT / LEAKS + PERIODS

Leakproof Underwear for Bladder Leaks and Periods

Noir · Black seamless brief

One pair for the sneeze, the laugh, the trampoline and your period. A seamless brief with an absorbent zone from front to back, for light bladder leaks any day of the month and for your period days, so one drawer replaces the liners and the pads.

£19.00 GBP per pair In stockor £10.86 a pair in a 7-pack
  • For light bladder leaks and period days, in one pair
  • Absorbent zone runs from front to back
  • Seamless edges that stay flat under leggings
  • Sneeze-test it for 60 days. Packs of 3 or more ship free.
Choose your pack
Colour: Noir · Black seamless brief
Size: Choose a size

Choose by your hip measurement. Sizes XS to 4XL.

Free standard shipping on eligible orders of £50 or more.

Build your rotation

Another pair, same fit.

Keep a clean pair ready while another dries.

Loading other colours…

Estimated delivery: 6 to 7 business days

Features & fit
  • For light bladder leaks (a sneeze, a laugh, a jump) and for period days
  • Absorbent zone from front to back, where leaks go when you move
  • A moisture-wicking top layer and a leak-resistant barrier
  • Seamless edges that stay flat under leggings and workout wear
  • Sizes XS to 4XL in Noir (black) and Terracotta (warm rust)

Find your size

  1. Waist: measure around your natural waist.
  2. Hips: measure around the fullest part of your hips.
  3. Between sizes: choose the size that matches your hips. One free size swap comes with every order.
Size guide
Size guide in inches
SizeWaistHipUS dress size
XS24 to 2633 to 350 to 2
S27 to 2936 to 384 to 6
M30 to 3239 to 418 to 10
L33 to 3542 to 4412 to 14
XL36 to 3845 to 4716
2XL39 to 4248 to 5118 to 20
3XL43 to 4652 to 5522 to 24
4XL47 to 5056 to 5926 to 28

For light to moderate leaks. For heavy or constant leaks, talk to your doctor or a pelvic floor physical therapist.

Wrong size? Every order includes one free size swap.

Product details

One seamless leakproof brief in Noir (black), for light bladder leaks and for period days. The absorbent zone runs from front to back under a moisture-wicking top layer, with a leak-resistant barrier. Made for light to moderate leaks. Comes with the 60-Day Wear-Test Guarantee and one free size swap.

A Single is one pair. The Sneeze and Period Set holds 3 pairs, the 5-Pack 5 pairs and a free wet bag, and the Full Week One-Drawer Kit 7 pairs and a free wet bag. Every pair in a pack comes in the size you choose.

Layers & absorbency

A soft top layer draws moisture away from your skin, the absorbent zone holds it, and a barrier layer keeps it off your clothes. The zone runs from the front to the back, because quick leaks and period flow both travel when you move.

Made for light to moderate bladder leaks and for period days. It is not made for heavy or constant incontinence. Refer to the garment label for the full fiber composition.

Care instructions
  • Rinse in cold water straight after wearing, until the water runs clear.
  • Machine wash cold on a gentle cycle, inside a mesh bag or the wet bag.
  • Hang to dry. Skip the dryer, fabric softener and bleach, which wear down the absorbent layers.
  • Keep 5 to 7 pairs, so a clean pair is always ready while others dry.
Shipping & the 60-Day Wear-Test Guarantee

Free standard shipping on orders of $50 or more. Under $50, standard shipping is $4.95. Express shipping is $9.95, and free on orders of $80 or more.

Orders are dispatched from our fulfilment warehouse within one business day. Delivery to the US takes 6 to 7 business days with standard shipping and 4 to 6 business days with express. For Christmas, order by 14 December with standard shipping or 15 December with express.

The 60-Day Wear-Test Guarantee. Wear it, wash it and wear it again for 60 days after delivery. If it doesn't work for you, email hello@kischt.com with your order number. We refund the pair you wore, with nothing to send back and no return fee. Unworn pairs follow our refund policy.

One free size swap on every order.

Read shipping policy Read refund policy

Your bag 0

Loading your bag…

KISCHT / SIZE GUIDE

Close fit, no bulk.

A close fit keeps the absorbent zone where it needs to be. Measure your waist and hips, then choose the size for the larger number.

  1. Waist: measure around your natural waist.
  2. Hips: measure around the fullest part of your hips.
  3. Between sizes: choose the size that matches your hips. One free size swap comes with every order.
Size guide
Size guide in inches
SizeWaistHipUS dress size
XS24 to 2633 to 350 to 2
S27 to 2936 to 384 to 6
M30 to 3239 to 418 to 10
L33 to 3542 to 4412 to 14
XL36 to 3845 to 4716
2XL39 to 4248 to 5118 to 20
3XL43 to 4652 to 5522 to 24
4XL47 to 5056 to 5926 to 28

For light to moderate leaks. For heavy or constant leaks, talk to your doctor or a pelvic floor physical therapist.

Wrong size? Every order includes one free size swap.

kischt leakproof underwear

Jump. Sneeze. Laugh.
Don't think about it.

Light bladder leaks after children, during workouts or in perimenopause are common, and so is a drawer of liners next to the period products. This seamless brief handles both: quick leaks any day, and your period days too.

Sizes XS to 4XL in Noir and Terracotta.

Woman laughing on a backyard trampoline with a kischt leakproof brief in her gym tote
Shown in NoirSeamless brief

Leaks and periods in one

Front-to-back zone

Seamless under leggings

Inside the brief

Two kinds of leak.
One pair.

A quick gush and a slow period day both land in the same front-to-back zone.

Test showing a quick blue liquid and a thicker period gel both soaking into kischt leakproof briefs
01 / Two liquidsA quick leak and period flow.
Diagram of the kischt leakproof brief: front-to-back absorbent zone and four layers
02 / The zoneFront to back, where leaks travel.

Swipe to see more

One drawer

Liners out.
Briefs in.

Seven pairs cover a full week, leaks or period.

One drawer with kischt leakproof briefs in Noir and Terracotta and the kischt box
01 / One drawerNoir and Terracotta.
kischt full-week kit: seven leakproof briefs with sneakers, water bottle and wet bag
02 / The Full Week KitSeven briefs and a wet bag.

Side by side

kischt vs
liners and pads.

What one drawer replaces.

What matterskischtLiners and pads
Quick leaksAbsorbed in the front-to-back zoneA liner that can bunch or shift
Period daysThe same pairSeparate pads or period underwear
Under leggingsSeamless edges lie flatEdges that show
After useRinse, wash and wear againThrown away
RestockingDone onceEvery month
If it doesn't work60-day sneeze testNo returns once opened

The colors

Two colors.
One drawer.

Noir for every day, Terracotta for a warmer tone.

Made for moving

Say yes to
the trampoline.

Jump, run and laugh without planning the next bathroom stop.

Sneeze-test it for 60 days. If it doesn't work for you, we refund the pair you wore, with nothing to send back.

Choose your pack

Getting it right

Three steps to
one drawer.

Swap the liners out in a week.

  1. Choose by your hips.

    Measure the fullest part of your hips and use the size guide.

  2. Wear it any day.

    For quick leaks on ordinary days, and on its own on your period days.

  3. Rinse, wash, hang.

    Rinse cold until clear, machine wash cold and hang to dry.

Good to know

Your questions.
Straight answers.

Everything you need to clear out the liners.

Revisit the comparison
Is it for bladder leaks or periods?

Both. The absorbent zone runs from front to back, so it handles a quick leak when you sneeze, laugh or jump, and your period days too.

How much does it hold?

It is made for light to moderate leaks, like a sneeze, a laugh or a jump. It is not made for heavy or constant incontinence; for that, talk to your doctor or a pelvic floor physical therapist.

Can I work out in it?

Yes. The seamless edges stay flat under leggings and the absorbent zone moves with you.

Which size should I choose?

Measure your waist and the fullest part of your hips, then choose the size for the larger number in the size guide. Every order includes one free size swap.

How long does delivery take?

Orders are dispatched from our fulfilment warehouse within one business day. Delivery to the US takes 6 to 7 business days with standard shipping ($4.95, free from $50) and 4 to 6 business days with express ($9.95, free from $80).

What if it doesn't work for me?

The 60-Day Wear-Test Guarantee covers you. Wear it and wash it for 60 days after delivery. If it doesn't work for you, email hello@kischt.com with your order number and we refund the pair you wore, with nothing to send back and no return fee. Every order also includes one free size swap. Read the refund policy.

How do I wash it?

Rinse it in cold water until the water runs clear, then machine wash cold on a gentle cycle inside a mesh bag or the wet bag. Hang it to dry, and skip the dryer, fabric softener and bleach so the absorbent layers keep working.

kischt leakproof underwear

One drawer.
Every day.

Choose your pack kischt.

A closer look