Period Underwear · Pre-launch

Leak-free. Toxin-free. Worry-free.

Reusable period underwear that holds up to 4 tampons of protection — and at $18 per pair, half the price of every other premium brand. Sleep through the night. Wear white pants. Swim, run, sit, breathe — without thinking about it. And every pair you buy sends one to a young woman in South Africa, along with an encouragement book about becoming a woman.

4-Layer Leak-Proof Up to 12 Hours PFAS-Tested OEKO-TEX Certified
Three styles
3 styles · The Everyday in clay + black
Buy 1, Give 1 Heavy

The Everyday

Heavy Flow · Mid-Rise

The Everyday

Heavy Flow · ~4 Tampons · Everyday Wear

Mid-rise, classic cut. Heavy-flow protection that feels like nothing — wear it day, wear it night, wear it through the workout.

Size
2 colors
$18
Buy 1, Give 1 Light

The Thong

Low-Rise · Lace Detail

The Thong

Light Flow · Low-Rise · Lace Detail

Low-rise thong with delicate lace at the waist. Light coverage, all-day comfort. Disappears under everything, even at the end of your cycle.

Size
$18
Buy 1, Give 1 Moderate

The Teen

Designed for Teens

The Teen

Moderate Flow · For Teens · Floral Print

Designed for first periods. Soft floral print, full coverage, soft elastic. The pair we'd give our own daughters first. Outgrow the fear — keep the dignity.

Size
$18
Why Period Underwear

Once you switch, you don't go back.

Period underwear isn't a swap for tampons or pads — it's a different relationship with your body. Soft, breathable, leak-proof, reusable. No bunching. No drying you out. No worrying about leaks.

The Clothed Project Tampons + Pads
Cost over 2 years $18 $400–$1,000
Hours of protection Up to 12 4–8 (tampons)
PFAS-free
Sleep without back-up
Waste created 0 350+ items/yr
Feels like underwear
How It Works

Four steps. No new habits.

Wear like regular underwear. Rinse, wash, and dry like regular underwear. Reuse for two years. That's the whole thing.

1

Wear

Just like regular underwear. Up to 12 hours of leak-free protection.

2

Rinse

Cold water rinse after wear, until the water runs clear.

3

Wash

Toss with your regular wash. Cold water, gentle cycle.

4

Air Dry

Hang dry to protect the leak-proof layers. Ready for next cycle.

Built For Trust

What's against your skin matters.

Period underwear has had a trust crisis. Forever chemicals. Vague claims. We built ours to clear the highest bar — and we'll show you the lab work to prove it.

OEKO-TEX Standard 100

Certified free from over 1,000 substances harmful to skin and the environment. The certificate number lives on every product page.

PFAS-Tested (Independent US Lab)

Every production run goes to a third-party US lab. Below-detection thresholds across the full PFAS panel — we publish the results.

4-Layer Leak-Proof

Moisture-wicking inner. Absorbent core (up to 4 tampons of capacity). Leak-proof barrier. Soft outer. Engineered, not improvised.

100+ Wash Tested

Every style is wash-tested for shape retention and leak-layer integrity beyond 100 cycles. Built to last 2+ years per pair.

Body-First Design

Cuts and absorbencies designed around real cycles and real bodies — light to heavy, brief to thong, every day of the month.

Common Questions

Everything you'd want to ask.

How much can one pair hold? +
Our heaviest absorbency holds the equivalent of about 4 tampons — meaning a typical heavy day can be covered by one pair for up to 12 hours. Lighter flow days, lighter absorbency. Use the absorbency tag on each product to find your match.
Can I sleep in them? +
Yes — that's one of the most-loved use cases. Pair a Heavy Flow style like The Brief or The High-Rise with going to bed without a back-up pad for the first time. Most people don't go back after one good night.
How do they not smell? +
The inner layer wicks moisture away from your skin instantly, and the absorbent core is engineered with a built-in odor-neutralizing finish. As long as you rinse and wash as instructed, they stay neutral cycle after cycle.
How do I wash them? +
Three steps. Rinse in cold water until it runs clear. Toss in your regular wash on cold, gentle cycle. Hang dry — don't tumble dry, as heat shortens the life of the leak-proof layer. That's the whole routine.
How long do they last? +
Two years of regular wear is our build target, with each pair tested past 100 wash cycles. Care for them as instructed and they'll outlast most of the disposable underwear in your drawer.
What does "Buy 1, Give 1" actually mean? +
For every pair you buy, we give one pair plus one puberty + encouragement book on becoming a woman to a young woman in South Africa — delivered through trusted local partners by The Clothed Project Foundation (our 501(c)(3) sister organization). That's the floor on every purchase. Want to give more? Donate directly to the Foundation →
Is my purchase tax-deductible? +
No — your purchase is a commercial transaction with the brand and is not tax-deductible. If you want a tax-deductible gift, donate directly to The Clothed Project Foundation, our 501(c)(3) (status pending). Visit the Foundation →
Do you have a size guide? +
Sizing runs XS through 2XL, true-to-fit per US standard. A detailed size guide launches with the full shop. If you're between sizes, our pre-launch recommendation is to go up — these are meant to feel soft and unrestrictive.
When do you launch? +
We're in the supplier-verification + Foundation 501(c)(3) approval phase. Public launch is planned once both gates clear. Drop your email at checkout (the Reserve at Launch flow) and you'll get the heads-up the day we're live, before anyone else.
Two-for-One, Both With Dignity

One pair to you. One pair + a book to her.

Your pair gives you 12-hour, sleep-through-the-night confidence. Hers arrives with an encouragement book about becoming a woman — words she may not have heard anywhere else. Same dignity, different bodies. Want to give more? The Foundation extends the gift.

Learn how the Foundation works
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