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Period Bikini | Seamless

Period Bikini | Seamless

Invisible edges, leak-proof confidence.

$28.00 USD
$35.00 USD $28.00 USD
Sale Sold out
Shipping calculated at checkout.
Absorbency
Moderate Flow
Size
  • Leak Proof Guarantee
  • 30-Day Risk Free Trial
  • +5000 Happy Customers

Sizing & Fit

Measure your natural waist and the fullest part of your hips, then match the numbers below.

Size Waist (in) Waist (cm) Hips (in) Hips (cm)
XS 21.7–23.2 55–59 30.7–32.3 78–82
S 23.6–25.2 60–64 32.7–34.2 83–87
M 25.6–27.1 65–69 34.6–36.2 88–92
L 27.6–29.1 70–74 36.6–38.2 93–97
XL 29.5–31.5 75–80 38.6–40.6 98–103
2XL 31.9–33.9 81–86 40.9–42.9 104–109
3XL 34.2–35.4 87–92 43.3–45.3 110–115

Tip: Between two sizes? Pick the larger one for a comfy fit. Still not sure? Chat with us—our fit team answers in minutes.

How Absorbency Works

Leak-Lock™ in four slim layers

  1. Quick-wick liner – ultra-soft mesh pulls flow down in under one second.
  2. Absorbent core – technical rayon fleece stores the flow securely (see levels below).
  3. Aquaphobic film – wafer-thin TPU stops pool or sea water from soaking in and keeps odour-causing bacteria out.
  4. Quick-dry shell – recycled nylon / Spandex blend stays light, smooth, and colour-true in chlorine or salt.

Choose the absorbency level that matches your day

Product Light Moderate Heavy
Tampon 1 2 3
Menstrual cup 0.5 1 1.5
Pad 1 2 3
Pantyliner 2 4 6

Tip: on ultra-heavy days, pair with a cup or tampon for the first hour, then wear swimwear solo once flow lightens.

Swim up to 8 hours leak-free, rinse, wash cold, air-dry, and you’re ready for the next dive.

Care Instructions

  1. Rinse in cold water after wear.
  2. Machine-wash cold, gentle, no fabric softener.
  3. Air-dry only—high heat can damage the leak-proof layer.

Tip: a quick rinse at the beach shower keeps colours bright.

Materials

• Skin-touch lining: 80 % polyester / 20 % nylon
• Absorbent core: 100 % polyester + breathable TPU film
• Outer shell: 78 % nylon / 22 % Spandex

Shipping & Returns

  • 30-Day Leak-Free Guarantee: Swim in it, wash it—if it’s not for you, full refund.
  • Shipping: Orders leave our local warehouse within 24 h (Mon-Fri). Accurate rate & arrival date shown at checkout.
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Swim Free—Zero Leaks, Zero Swell

Moisture-wicking liner absorbs period flow in under one second, then an aquaphobic barrier seals it in while repelling pool or sea water—so nothing seeps in or out.

Look bare—feel bullet-proof. Our Seamless Period Bikini disappears under any suit while keeping you bone-dry and fearless—no pads or tampons required.

✓ Seamless 360° edges — zero lines, zero digging

✓ 4-Layer Leak-Lock™ gusset — holds up to 2 tampons, stays paper-thin

✓ Aquaphobic barrier — repels pool & sea water, never swells

Reusable for 3 years and backed by our 30-Day Leak-Free Promise. Ready to swim invisible and unstoppable? Tap Add to cart and dive in.

Ask the Sisters

Will it leak in the pool?

No. The aquaphobic barrier repels external water while the absorbent core locks period flow inside. The suit stays slim and dry—no swelling or soggy feel.

Can I wear it on heavy-flow days?

Yes. For very heavy flow, we suggest pairing with a menstrual cup or tampon for the first few hours, then wearing the suit solo once your flow lightens.

How long can I swim before changing?

Up to 6-8 hours for light–medium flow. Always rinse and switch to a fresh suit after extended wear for best hygiene.

How do I wash it?

Rinse in cold water, machine-wash on gentle (no fabric softener), then line-dry. Skip the dryer—high heat can damage the leak-proof layer.

How do I pick the right size?

Measure your hips and check our Size Guide above. If you’re between sizes, choose the larger for a comfier swim fit. One free size exchange within 30 days.

Is the fabric safe for my skin?

Yes. We use premium swimwear knits and waterproof films approved for skin contact. No harmful chemical finishes are added.

Will chlorine or salt ruin the suit?

No. The fabric is lab-tested for resistance to chlorine, salt and UV. Rinse after use to keep colours bright and elastic fibres strong.

Customer Reviews

Based on 44 reviews
89%
(39)
11%
(5)
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O
Olivia Turner

Couldn’t even feel the edges—totally seamless and 100 % leak-free during a beach volleyball tourney.

A
Ava Johnson

Finally a period suit that looks like a normal bikini bottom. Soft, stretchy, and zero lines under my board shorts.

M
Mason Davis

Took it snorkelling on the Gold Coast—rinsed in fresh water after and it dried super-fast.

J
Jack Thompson

Girlfriend swears by it for surf training—says she forgets she’s on her cycle.

C
Charlotte Wilson

Seamless sides mean no digging marks on my hips. Comfort level: 10/10.

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