Save 61%

First Generation Classic Brief in Black

Odor Control
Ultra Soft

These briefs come from our first-generation period underwear design. They have the same fit, fabric, and performance as our regular Classic Briefs, and are reduced in price only due to minor deviations from our standard quality specifications.

Color: Black

Style: Brief

Brief

Size: XS

XS S M L XL XXL XXXL

Absorbency: Light/moderate

Light/moderate

Fast + free shipping on orders over €75

Expert customer support support@allmatters.com

Details

Why are they discounted?

Comes without our standard retail packaging
Were produced in Sri Lanka instead of Portugal
Uses a slightly different absorbent construction, which some users found more audible during movement

Aside from these differences, the underwear remains fully functional and is made from the same high-quality materials, including soft TENCEL™ fibers.

Recommended for:

Trying period underwear for the first time at a very accessible price
An emergency or backup pair
Anyone who values functionality over perfect aesthetics

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

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

This product is not included in our Satisfaction Guarantee, but is still covered by our regular returns policy.

Delivery + Returns

Free Shipping
We offer free shipping on all orders over €75.

Fast Processing and Delivery
Most orders are shipped the same day and arrive in 4-7 working days. Deliveries to the US and Canada may be slightly longer.

Returns
We offer simple and straightforward returns on all unopened products. Full information can be found here.

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.

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

First Generation Classic Brief in Black