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Understatement Micro Period Bikini Briefs

4.4 · 8,200+ Amazon.co.uk ratings for the Lunette cup

Light days and backup, covered.

  • Holds up to 1 regular tampon's worth
  • 4-layer gusset, lab tested, machine washable at 30 °C
  • Recycled lace or microfibre, soft silicone label so no itchy tags

“I had my reservations, but first worry-free period in my life!”

— Caroline, Lunette cup owner · Verified purchase, Amazon.com
£25.50 GBP
Taxes included. Shipping calculated at checkout.
ColorGreen
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  • ✓ Free shipping over £40
  • ✓ Lab tested
  • ✓ Recycled fibres
  • Leaks?Holds 1 regular tampon
  • Does it work?Lab tested, 4-layer gusset
  • Sweaty?Breathable mesh, cotton gusset
  • Hassle?Machine wash at 30 °C

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Full description, ingredients & safety

These Period Bikini Briefs offer light absorbency, holding up to 1 regular tampon worth of menstrual fluid. All our period underwear is lab-tested and machine washable at 30°C/86°F. Wash your period panties before first use to increase absorbency and ensure maximum leak protection.


• Mid-rise period bikini briefs made from recycled microfiber and mesh

• Buttery-soft microfiber front and back panels for a smooth feel

• Tactile mesh side panels for breathability

• Thin, microfiber-covered waistband for maximum comfort

• Bonded seams for a sleek look and ultimate comfort

• 4-layered gusset for medium absorption of up to 1 tampon worth of menstrual fluid

• Soft silicone care label = no itchy tags

 Fabric - PEACH STRETCH™

Crafted from our innovative Peach Stretch™ fabric for unmatched comfort. Made with recycled microfiber, featuring a buttery soft texture and peachy finish.

 Composition

85% Recycled Polyamide, 15% Elastane
Mesh: 83% Polyamide, 17% Elastane
Gusset: Layer 1: 95% Cotton, 5% Elastane 
Layer 2: 75% Bamboo, 25% Polyamide
Layer 3: Breathable TPU Layer

 Wear & Care

Keep your pieces looking good-as-new by washing them at low temperature. We recommend max 30°C/86°F.

Use a wash bag to protect the garments during the wash cycle.

Don’t iron, bleach or tumble dry.

  • Made for light days — on their own — or with your cup in the first cycles, while you learn
  • Lab-tested
  • Machine washable at 30 °C — wash before first use for full absorbency
  • No itchy tags — soft silicone care label

Which size fits me?

Waist: the narrowest point. Hips: the widest point, just above your seat. Measure snug, in cm, and pick the row you land in.

Size Waist (cm)Hips (cm)
XS 62–6788–91
S 68–7292–97
M 73–7998–104
L 80–86105–111
XL 87–97112–122
2XL 98–108123–133

From the maker's own chart.

Which size fits me?

Waist: the narrowest point. Hips: the widest point, just above your seat. Measure snug, in cm, and pick the row you land in.

Size Waist (cm)Hips (cm)
XS 62–6788–91
S 68–7292–97
M 73–7998–104
L 80–86105–111
XL 87–97112–122
2XL 98–108123–133

From the maker's own chart.

You're £40.00 away from free shipping

Light days, on their own

Period underwear for light days, spotting and the first cycles with a cup. Machine wash at 30 °C in a wash bag; wash before first use.

Registered with The Vegan Society Carbon neutral

What Lunette customers say

Verified Amazon purchases, about the Lunette cup

★★★★★
I had my reservations, but first worry-free period in my life!
Caroline, United States, 2017 Verified purchase, Amazon.com
★★★★★
It's easier to use than other cups and more comfortable.
Berenice, Netherlands, 2025 Verified purchase, Amazon.com
★★★★★
I have been using the Lunette cup for a little over 2 years now and will never, ever go back to tampons again.
D., United States, 2015 Verified purchase, Amazon.com

Frequently asked questions

How much does it hold?

Up to one regular tampon's worth — made for lighter days, spotting and discharge, on their own. With a cup, wear them in the first cycles while you learn.

How do I wash it?

Machine wash at 30 °C / 86 °F, ideally in a wash bag. Wash before first use — it increases absorbency and leak protection.

Can I wear it with my cup?

Yes. On light days on their own; in the first cycles with your cup, while you learn the fold and the seal. A cup that sits right doesn't leak — the underwear is there to prove it to you.

How fast does it ship?

Orders are processed within 24–48 hours on weekdays. Within the UK and Ireland, shipping is free over £40 and a flat £4.99 below.

What if something's wrong with my order?

Wrong item? Email info@lunette.com with a photo and we ship the right one. A cup that clearly doesn't work for you after a fair try — two to three cycles — we refund, or send the other size. Nothing to return.

Still have a question?

Write to info@lunette.com — a real person answers, usually within a working day.

Goes with it

Picked to go with it.