Tencel™ Brief in Black

Odor Control
Ultra Soft
PFAS-Free

Comfortable, mid-rise fit with full coverage and up to 12 hours of leak-proof protection. Breathable and gentle on skin.

€39,95 EUR

Tax included.

Style: Brief

Brief High Waist

Fast + Free Shipping on orders over €75

Bundle Discounts Buy 3+ Save 15% Buy 6+ Save 25%

Details

AllMatters Tencel™ Period Underwear is made to feel like your favorite pair: soft, breathable, and reliable. With built-in absorbent protection and a flattering fit, it gives you peace of mind without relying on disposables. Crafted from sustainable TENCEL™ and ethically made in Portugal, it’s comfort you can count on for your body and the planet.

Available Absorbencies

Light/Moderate: Holds 1–2 tampons' worth
Moderate/Heavy: Holds 3–4 tampons' worth

Fit + Fabric

Fit
Flattering high-cut legs with a hip-hugging fit. Finished with a soft mousseline stretch trim at the waist and leg openings.

Fabric
Body fabric: 94% TENCEL™ Lyocell, 6% elastane
Inner Layer: 77% polyester, 23% merino wool
Absorbent layer: 85% TENCEL™ Lyocell, 15% polyester
Waterproof Layer: 100% polyester

Wear + Care Guide

Step 1
Before the first use, we recommend that you wash the underwear to enhance the functionality of the absorbent layer (just like a towel).

Step 2
Use period underwear instead of pads, tampons or cups, or as a backup for extra protection.

Step 3
After use, rinse in cold water until it runs clear. Machine wash cold (30°) or by hand with a mild detergent. Do not use fabric softener or bleach. Hang to dry.

Step 4
Reuse and repeat – during the day and night!

Disposal
Period Underwear: At the end of their lifespan most textiles can be recycled. The collected textiles are sorted and graded as natural, synthetic, and blended fabrics and will be used again.

The packaging: All our packaging is made from recycled and/or recyclable paper and cardboard. Please make sure to dispose of the packaging in the appropriate bin, according to your local recycling regulations.

Satisfaction Guarantee

We offer a full refund of one used pair of underwear per order if the product doesn't work as promised. Size exchanges are available for unused period underwear in unopened packaging. If you ordered multiple pairs, all other underwear must be returned unused in unopened packaging to receive your refund. Click here to learn more.

Soft by Nature. Strong by Design.

Crafted with breathable and sustainable TENCEL™ for next-to-skin comfort that performs.

Reusable + Washable

Just rinse, wash, hang dry and reuse.

Leak-Proof Comfort

Our ultra-thin gusset holds 2-4 tampons' worth, for up to 12 hours of secure, non-bulky comfort.

Ultimate-Softness

Made from sustainable TENCEL™ Lyocell for superior comfort and breathability.

How does period underwear work?

Our period underwear combines ultra-absorbent materials with leak-proof layers to lock in moisture. It feels just like regular underwear but works hard to keep you protected, no matter your flow. Simply wear, wash, and reuse.

Is period underwear hygienic?

Absolutely. Our period underwear is made from high-quality, antibacterial materials that ensure hygiene and freshness. Plus, they’re OEKO-TEX certified, meaning they meet high safety standards for fabric use, free from harmful substances.

What are PFAS, and are they used in AllMatters period underwear?

PFAS (Per- and polyfluoroalkyl substances) are chemicals sometimes used to make fabrics water-resistant or stain-resistant. At AllMatters, we take your health and the environment seriously, so we do not use PFAS in our period underwear. Instead, we focus on safe, non-toxic materials and rigorous testing to ensure quality and safety.

How long can you wear period underwear?

Period underwear can be worn as long as your flow allows, but for a maximum of 12 hours at a time. Some prefer to use them during the day, while others use them as extra protection along with a menstrual cup or tampon. Generally, it is recommended to use the underwear for 8-12 hours for maximum protection and comfort.

You can also use the underwear at night, for spotting between periods, or for discharge. To ensure that the underwear provides the best protection, you should regularly check if they start to feel wet or if blood is visible at the seams - this is a sign that it is time to change them.

Why We Made This

Our goal with the TENCEL™ Collection was to create go-to period underwear that feels as good as it functions. Whether you prefer the full-coverage comfort of the Brief or the flattering fit of the High Waist, each style offers breathable softness, 12-hour leak-proof protection, and a lighter impact on the planet. Most period products weren’t designed with real comfort or sustainability in mind—we wanted to change that. This collection is our answer: reusable, gentle on skin, and thoughtfully made without plastic or bulk.

Super comfy

I've been skeptical about trying these, because I use cups and discs. But I've been diagnosed with fibroids and one of them sits on my bladder, which makes my disc self emptying difficult. So I thought I'd try these as back ups to stop leaks whenever I blow my nose or sneeze lol.
They're very comfortable, the padding is nice and thick. I have both the light/moderate and moderate/heavy briefs.
I do however need to trail these by themselves (no cups or disc) on my heaviest day's, to see how they match up, because I'd hate to be caught out with leaks.

Best of all three panties I ordered

All three items I ordered are great (thongs, briefs and tencel brief in M blacks/moderate/heavy) but Tencel briefs ,to me, feel the safest and comfiest. Those are my first period panties and I’m amazed. Very cool technology.

Adoro a marca e recomendo 100%

Já conhecia os produtos desta marca e voltei a comprar! Recomendo 100%

Finally!

I ve been wanting to buy period underwear for years. And they are perfect. They are comfortable, the material is soft and they work amazingly.
I sized up a number and it feets so well. It hugs the body and I feel secure and comfy. As a woman who bleeds a lot the underwear do their work. The second day of my period that I bleed heavily I have to change 2 - 3 times but just because after 5-6 hours it feels wet, not because I had a leak. No leaks! I have purchased 4 pieces so I wash and reuse them during my period multiple times. It's easy and they dry quickly. I definitely recommend them. It's so comfortable finally!
I also recommend the high waste underwear if you want that warm sensation to your belly, I use them especially at night, though through the day I prefer the regular ones. Also, if you bleed a lot moderate/heavy are ideal. I use light/moderate mostly for the end of my period.
Thank you for this. I feel so good not having to wear toxic/plastic pads anymore!

Comfortable and reliable

I was really surprised by how much the underwear holds! Its comfortable and easy to wash, definitely my go to choice for period products now. ♡♡♡

Our 2% Pledge

Every year, we pledge to donate AllMatters products for a total value of at least 2% of our annual revenue. In effect, your purchase helps us put safe, reusable period care into the hands of those who need it most, while driving the shift toward a waste-free future. Click on the link below to read more about our mission and commitment.

Why We Exist

Tencel™ Brief in Black