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Model in a kitchen wearing a black tank and black Leakproof TENCEL Thong

The nicest underwear you own. It also handles your period.

Leakproof TENCEL™ underwear for periods, postpartum, and everything in between.

Free shipping $75+ · First Pair Promise

LEAKPROOF

TENCEL™ MODAL

CUT & SEWN IN LA

FIRST PAIR PROMISE

HSA/FSA ELIGIBLE*

Changing the flow of things.

Black Absorbent TENCEL™ Modal Thong Period Underwear
 
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Why Flower Girl

Cut like lingerie. Built like period underwear.

The outside is TENCEL™ modal, a fiber made from trees: soft enough that people wear it on their off days, in shapes you'd actually want to be seen in. The inside is a slim three-layer gusset that holds up to 3 regular tampons' worth (thong), made without PFAS, with a waterproof layer that's heat-fused on. No glue, no solvents. Every pair is designed, cut, and sewn in LA.

Before you ask

Will it actually hold?

Great for light-to-moderate days, bladder leaks, and postpartum. Heavier days? The boxer and the brief with removable pad have you covered.

Shop the thong

Is it a hassle to wash?

Rinse it cold in the shower until it runs clear, wash cold, hang dry. No fabric softener. Every order comes with a mesh bag so it never gets lost in the machine.

Read the FAQ

What if it doesn't fit?

First Pair Promise: tell me within 30 days. I'll send a different size or style free, or give you store credit that never expires.

The First Pair Promise

Don't take my word for it.

Leakproof TENCEL™ Brief in Black

My favorite product of all!

"Not only is it comfortable, chic, and reliable, but the price point for such a quality product is so amazing and worth every single penny."

Lauren H., on the Brief

Black Absorbent Tencel Modal thong

We Should All Own This

"I even wear white pants with the thongs without giving a second thought."

Raquel, on the Thong

Leakproof TENCEL™ Boxer in Black

Period briefs of my dreams

"I sometimes wear these even when I'm not on my period because they are just so comfortable!!"

Laura H., on the Boxer

Grid of fit photos showing the black Flower Cut-Out Brief from different angles

I created the underwear I couldn't find.

Use your HSA/FSA.

Our period underwear, sets, and reusable pads may be eligible. Look for the Truemed logo on product pages and choose Truemed at checkout.

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15% off your first order.

Plus one good email a week: founder notes, early drops, and the occasional thing nobody told you about your body.