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Woman wearing Scarlet Period High-Waist Swim Brief against a white background

Scarlet Period High-Waisted Swim Bikini Brief | Light Absorbency, flattering high waist

Scarlet Period Swim Brief – Light Flow, Leak-Proof Confidence in Water

Period Swim Brief

Q: What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, equal to less than one regular tampon. Think of it as a new-age panty liner, great for spotting, light leaks and discharge. Try: Invisible ThongLight: Holds up to 3 teaspoons, equal to 2 regular tampons or one pad. For light days, drips and discharge. Try: G-String or Bikini Brief in Light-ModerateModerate: Holds up to 5 teaspoons, equal to 3 regular tampons or 2 pads. For moderate days, or as extra defence on heavy days with our Period Cup. Try: High-Waist Brief or Bikini Brief in Moderate-HeavyHeavy: Holds up to 7 teaspoons, equal to 4 regular tampons or 3 pads. Our heavy hitters are great worn on their own, day or night. Try: Boyshort or Period Cup

Confidence looks good in the water.

$42.00

Yes, you can swim on your period. The high-waist Swim Brief has a built-in leak-proof lining that absorbs and holds, so blood stays put, not in the pool.

Light to moderate days, around one tampon's worth. Ribbed recycled fabric, sleek high-waist cut, no strings and no sarong strategy. Vogue called it swimming in peace. We'll take it.

Leak-Proof Swim Protection

Recycled, Eco-Friendly Fabric

Stylish and ultra-flattering fit

Comfy & Body-safe

Size

6 (XS) 8 (S) 10 (M) 12 (L) 14 (XL) 16 (XXL)

Why You'll Love it

✨ Leak-Proof Protection: Full coverage and leak-proof protection, keeping you confident in and out of the water.

✨ Comfortable Fit: High-waisted design that provides both a flattering and comfortable fit.

✨ Made from Recycled Materials: 90% recycled polyester and 10% spandex, offering an eco-friendly option for your period swimwear.

✨ Quick-Dry Gusset: Polyester quick-dry gusset ensures you stay dry and fresh.

Easy Care, Zero Fuss

✨ Rinse in cold water after wearing (until the water runs clear).

✨ Machine wash cold with a mild detergent.

✨ No bleach or fabric softener - keep it simple.

✨ Line dry or tumble dry on low.

Materials & Composition

✨ 90% Recycled Polyester: Made from eco-friendly recycled materials to reduce environmental impact.

✨ 10% Spandex: For the perfect amount of stretch and comfort.

✨ Quick-Dry Gusset: Made from polyester, ensuring you stay leak-free.

✨ PFAS-Free: Free from harmful chemicals, independently lab-tested.

Size & Fit

✨ Fit Note: Our underwear and swim runs on the slightly smaller side - if you're between sizes, size up.

✨ Teen-to-Adult Fit: Our sizing is unique - please refer to both the numerical (e.g. 10, 12) and letter sizing (e.g. M, L) in our guide.

✨ Australian Sizing: We use AU sizes - international customers, check our Size Guide.

✨ Still Unsure? Contact us for advice. We love a chat!

Planet-Friendly Practices

Did you know that over 12 billion pads and 7 billion tampons end up in landfills yearly? By choosing Scarlet, you're supporting a more sustainable future - where self-care and sustainability go hand in hand.

✨ High-Quality, Safe Fabrics: Made with care, free from PFAS and harmful chemicals, and independently lab-tested for your safety.

✨ Eco-Conscious Manufacturing: Crafted with a focus on quality and reducing environmental impact.

✨ Recyclable Packaging: Minimal waste for a cleaner world.

✨ 1% for the Planet: Scarlet is proud to contribute to environmental stewardship with every purchase.

Period Swim Brief

$42.00

Models wearing Scarlet Period Swim Bikini Brief

Period swim that won't cramp your style

Whatever your stroke, one pair of period swimwear lets you lap with confidence.

The high-waist Swim Brief is leak-proof and fast-absorbing, around one tampon's worth, so you can dive in without a second thought.

Looks like normal swimwear
Zero leaks, zero worries
90% recycled fabric
PFAS-free and lab tested

BUY NOW

Your Questions, Answered

How does Period Swim work?

Scarlet Period Swimwear features a multi-layered leak-proof technology that absorbs and contains fluid. An added waterproof inner layer then works to stop any menstrual fluid from leaking out, and water from getting in. Click to read more on the magic of Period Swimwear.

Do I need to wear a cup, tampon, or pad too?

Depending on the absorbency you choose and the heaviness of your flow, you can wear our period undies on their own or as backup along with a Period Cup or tampon.

What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, equal to less than one regular tampon. Think of it as a new-age panty liner, great for spotting, light leaks and discharge. Try: Invisible Thong

Light: Holds up to 3 teaspoons, equal to 2 regular tampons or one pad. For light days, drips and discharge. Try: G-String or Bikini Brief in Light-Moderate

Moderate: Holds up to 5 teaspoons, equal to 3 regular tampons or 2 pads. For moderate days, or as extra defence on heavy days with our Period Cup. Try: High-Waist Brief or Bikini Brief in Moderate-Heavy

Heavy: Holds up to 7 teaspoons, equal to 4 regular tampons or 3 pads. Our heavy hitters are great worn on their own, day or night. Try: Boyshort or Period Cup

How do I store them post-swim

We recommend travelling with a water-resistant travel bag such as our Toiletry Bag. Give them a good rinse to remove any chlorine or salt water, before stashing away. Once home, either machine wash in cold water with mild detergent or if wearing them again soon, hang them out to fully dry (the sunnier the better).

Are they easy to wash?

After use, give them a good rinse in cold water to remove any chlorine or salt water. Then, machine wash in cold water with mild detergent (no bleach!). Try our Laundry Bag to safeguard them on laundry day. Then just hang out to dry (the sunnier the better) or tumble dry on low - that’s it!

TIP: If it’s your first wear, pop them in the washing machine with your next cold cycle - washing them before wearing activates their absorbency even more

Why buy a Swim Set?

Save money and stay ready with our Brief + Swim BFFs Set! It features these killer High-Waisted Period Swim Briefs for in the water, a pair of Period Bikini Briefs for when you’re out, and a waterproof Toiletry Bag to store your wet togs in until you get home.

★★★★★

"Because it is a classic black hue, you can pair these with any black bikini top you already have for when that time of the month comes around."
Women's Day

★★★★★

"Pair this flattering high-waisted style with your favourite bikini top for the perfect beach day ensemble."
Elle magazine

★★★★★

"With a leak-proof gusset and a sleek high-waisted cut, swim in peace this summer."
Vogue