Diane menstrual underwear
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- Free exchanges
- Free delivery from 49 €
- 60 days to try
- Pay in 3, interest-free

Size Guide - Microfiber Collection
Our models fit true to size. Please note that the microfiber material of our panties is shaping and tends to stretch after the first wash.
Therefore, we recommend choosing the size you usually wear.
Need advice? Unsure about the size?
Contact our customer service by email at contact@smoon-lingerie.com.
| Size | Clothing size | Waist | Hips |
|---|---|---|---|
| Women | |||
| XS | 34 | 56-62 cm | 84-88 cm |
| S | 36 | 62-68 cm | 88-92 cm |
| M | 38 | 68-74 cm | 92-96 cm |
| L | 40 | 74-80 cm | 96-100 cm |
| XL | 42 | 80-86 cm | 100-104 cm |
| XXL | 44 | 86-92 cm | 104-108 cm |
Swipe the table to see every measurement
How to measure
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WaistAt the narrowest point of your torso, above the navel.
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HipsAt the fullest point, keeping the tape measure horizontal.
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Between two sizes?Go for the larger one.
You're on the list!
Meanwhile,
Details
- Absorption
- Up to 8h
- Capacity
- 4 tampons
- Flow
- Heavy
- Sizes
- XS to XXL
Designed forWalking, yoga, Pilates, fitness and cycling on heavy-flow days.
Diane supports those who keep moving on heavier-flow days. Its stretch fabric follows every movement without feeling restrictive, while its invisible finishes remain undetectable under fitted clothing, leggings, sports shorts or tights.
Its breathable fabric quickly wicks away moisture and dries fast. The silver thread integrated into the absorbent area provides odor control, even on heavy-flow days.
Everyday benefits
- Heavy-flow absorptionEquivalent to 4 tampons, with up to 8h of protection.
- Invisible under fitted clothingLeggings, sports shorts or tights - nothing shows.
- Soft, stretchy fabricIt follows your movements without feeling restrictive.
- Long-lasting freshnessBreathable fabric, quick drying between workouts.
- Odor controlA silver thread is integrated into the absorbent area.
- No chafing or visible linesNothing rolls at the waist, nothing leaves marks.
Manufacturing & environmental impact
- Design By our textile engineer Paris
- Knitting The yarns are knitted into fabric France, Italy
- Dyeing and printing The fabric gets its colour or print France, Italy
- Making up Cutting, sewing and finishing Tunisia
- OEKO-TEX® STANDARD 100 certified, certificate no. CQ 1285/1
Composition & maintenance
Main fabric
- 75% polyamide
- 25% elastane
Gusset
- 100% polyester*
Absorbent
- 100% polyester
Membrane
- 86% polyester
- 14% polyurethane
*contains at least 98% recycled polyester
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Cold wash or 30°CIn the machine, in a laundry bag, with the rest of your wash.
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Hand washableIf you prefer, with your usual detergent.
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No tumble dryer AvoidAir dry, away from the radiator.
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No greasy soap AvoidNo Marseille soap, glycerine or fabric softener: they clog the fibres.
Delivery
Active or Perf?
Range Active
You’re looking at Diane
Sports & everyday activities
- Periods
- Comfort
- Support
Up to 8h protective
Models
- Luna
- Diane
What about the Perf range?
Periods, sweat, leaks during physical activity, ultra-breathable & anti-chafing, up to 12 hours of absorbency.
100% invisible protection










