Menstrual Underwear 101: Everything You Wanted to Know but Were Afraid to Ask
There was a time when talking about your period felt taboo. Now? We’re ditching the shame, the plastic-packed products, and the discomfort. Welcome to the future of period care: menstrual underwear.
If you've been curious but too shy to ask the real questions (like "Do they actually work?" or "Will I feel like I'm sitting in a puddle all day?"), this guide is for you. No fluff, no filters — just real talk about why menstrual underwear is a total upgrade.
What is menstrual underwear?
Menstrual underwear looks like regular underwear but comes with hidden superpowers. Each pair is designed with layers of fabric that absorb menstrual blood, lock in moisture, and prevent leaks. Think of it as your period's BFF that doesn't crinkle, bunch, or shift around.
At Fri Period, we’ve taken it even further. Our underwear is made from breathable, sustainable fabrics like organic cotton and bamboo. No harmful chemicals. No stress. Just pure, planet-friendly comfort.
How does it actually work?
We get this one a lot. It all comes down to layers:
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Top Layer: Soft and moisture-wicking, so you stay fresh and feel dry.
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Middle Layer: Super absorbent — holds up to 3 regular tampons' worth.
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Bottom Layer: Leakproof barrier to keep you worry-free.
That means no bulk, no diaper-feel, and no embarrassing stains. Just one comfy pair of undies doing all the hard work.
Who is it for?
Honestly? Everyone. Whether you have a light flow, a heavy flow, or something in between, there’s a pair for you. Menstrual underwear is perfect for:
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First periods
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Overnight protection
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Backup for menstrual cups or menstrual pads (but work equally well all on their lonesome!)
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Light bladder leaks
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Everyday peace of mind.
Our customers range from teenagers to perimenopausal queens, and everyone in between. There’s no age limit on comfort.
Do they feel wet? Sticky? Gross?
Nope. This is 2025, not the Stone Age of period care.
Thanks to our advanced tech and moisture-wicking materials, Fri Period underwear keeps you feeling dry and fresh. Many users say they forget they’re even on their period. (Seriously.)
How many pairs do I need?
It depends on your flow and how often you want to do laundry, but here’s a general guide:
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Light Flow: 3–4 pairs
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Medium Flow: 4–6 pairs
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Heavy Flow: 5+ pairs
Need help building your starter set? Check out our All Period Underwear Collection.
How do I wash them?
Rinse in cold water until it runs clear, then machine wash on a gentle cycle. Skip the fabric softener or bleach (it messes with absorbency). Air dry to keep them going strong. That's basically the full care instructions!
Are they safe?
Absolutely. Fri Period underwear is made without using PFAS, parabens, and other harmful chemicals. Our fabrics are OEKO-TEX® certified.
Your health is a priority to us and your body deserves the best, period.
Can I wear them all day?
Yes!
Why choose Fri Period?
Because we’re not just another brand. We’re a movement. Here’s what sets us apart:
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Sustainable, non-toxic materials
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Inclusive sizing and styles
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One tree planted for every pair sold
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Founded by real women, for real life
We’re here to change the way the world bleeds. One comfy, empowering pair at a time.
FAQs
Q1: Can I wear menstrual underwear overnight?
Yes! Our high-absorbency styles are perfect for a leak-free night’s sleep.
Q2: Will they work for postpartum bleeding?
Totally - read more about period undies as postpartum support here.
Q3: Are they good for teens?
Absolutely. They’re comfy, cute, and way less awkward than pads.
Q4: Can I wear them while working out?
Yep! We love them for working out!
Q5: Do they replace all other products?
Yes! Many folks use them solo, others use them as backup. Your period, your rules.
Ready to make the switch?
✨ Shop Our Menstrual Underwear Collection
Menstrual underwear is more than just a product – it’s a mindset shift. It’s about comfort, confidence, sustainability, and showing up for yourself every single cycle.
Got questions? Ask them. Want to try a pair? Do it. Because your period should never hold you back.
Let Fri Period help you bleed better.
