AllMatters
Seamless Menstrual Briefs "ActiveMatters Brief"
Seamless Menstrual Briefs "ActiveMatters Brief"
Size chart
Size chart

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AllMatters "ActiveMatters Brief" seamless menstrual briefs with medium absorbency — are ultra-light, "second-skin" feeling menstrual briefs designed for movement and maximum discretion. Seamless, so the briefs remain invisible under clothing, even under tight leggings, and reliable protection allows you to feel secure for up to 12 hours.
🕶️ Invisible fit – seamless silhouette under clothing, with no visible lines.
🩸 Absorbs up to 20 milliliters (equivalent to 4 tampons).
🕐 Up to 12 hours of protection – comfort day and night.
🤸 Designed for movement – elastic fabric adapts and "stays in place."
🚫 PFAS-free – no "forever chemicals."
👙 Mid-rise model – mid-waist with full back coverage.
Instructions for Use
Instructions for Use
Use AllMatters menstrual underwear during menstruation, light incontinence, or vaginal discharge.
1. Before first use, it is recommended to wash the underwear to enhance the functionality of the absorbent layer (just like a towel).
2. Use menstrual underwear instead of pads, tampons, cups, or discs, or as a backup for extra protection.
3. After use, rinse the underwear with cold water until it runs clear.
4. You can use these menstrual panties both day and night.
Ingredients
Ingredients
AllMatters underwear is made in Portugal.
Underwear layer structure:
1. Main fabric: 77% polyamide, 23% elastane.
2. Inner layer: 100% polyurethane.
3. Absorbent layer: 90% cotton, 10% polyester.
4. Waterproof layer: 100% polyester.
All AllMatters packaging is made from recycled and/or recyclable paper and cardboard. Therefore, please dispose of your packaging in the appropriate recycling bin.

Product certificates
Product certificates
These panties are OEKO-TEX certified. The materials used in the production of AllMatters panties are OEKO-TEX certified and free from harmful chemicals, pesticides, and biocides, making them gentle on the skin.
Maintenance
Maintenance
Washing instructions for AllMatters menstrual underwear:
1. Machine wash in cold water (30°) or hand wash with mild detergent.
2. Do not use fabric softener or bleach.
3. Hang to dry; avoid drying on a radiator or in a tumble dryer.
When AllMatters menstrual underwear is worn out, it can be recycled.
F.A.Q.
F.A.Q.
1. How are AllMatters menstrual panties made?
AllMatters menstrual underwear combines highly absorbent materials and leak-proof layers to lock in moisture. They feel like regular underwear but provide excellent protection, regardless of your flow.
2. Are AllMatters menstrual panties hygienic?
AllMatters menstrual underwear is made from high-quality antibacterial materials that ensure hygiene and freshness. In addition, they are OEKO-TEX certified, meaning they meet high safety standards for fabric use and are free from harmful substances.
3. What are PFAS? Are they used in AllMatters panties?
PFAS (per- and polyfluoroalkyl substances) are chemicals sometimes used to make fabrics water or stain-resistant. AllMatters takes your health and the environment seriously, which is why they do not use PFAS in their menstrual underwear. Instead, AllMatters focuses on safe, non-toxic materials and conducts rigorous testing to ensure quality and safety.
4. How long can AllMatters panties be worn?
It is generally recommended to wear the underwear for 8–12 hours to ensure maximum protection and comfort. Menstrual underwear can be worn for as long as your flow allows, but no longer than 12 consecutive hours.
The underwear can be worn both day and night to absorb menstrual flow, urinary incontinence, or discharge. Simply wear, wash, and reuse.
Also, menstrual panties can be used as one part of your protection, alongside a menstrual cup, disc, or tampon.
5. How do I know if the underwear needs to be changed or replaced?
For the underwear to provide the best protection, you should regularly check if they start to feel damp or if there is blood visible in the seams. If you notice any of these signs, it's an indication that it's time to change them.
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AllMatters is a Danish brand known for creating sustainable, reliable, and environmentally friendly menstrual products. This company caught our attention due to its innovative and eco-friendly menstrual products. The company states that its goal is to simplify everyday life and responsibly care for one's body while reducing negative environmental impact.
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