Starter Pack - Night & Day Adult
Absorption : Moyen | Abondant
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Starter Pack - Night & Day Adult

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.
-
HipsAt the fullest point, keeping the tape measure horizontal.
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Between two sizes?Go for the larger one.
Details
Your days and nights don't have the same needs. When you're lying down, your flow no longer follows the same path: it moves toward the back, where conventional protection often stops too soon. That's exactly what this duo addresses.
The Starter Pack Night & Day brings together the two protections that cover an entire cycle: the Léto boxer for your heavy-flow nights, and the Séléné period underwear, our invisible best-seller, for your medium-flow days.
At night
Léto period boxer · heavy flow
Its absorbent area extends higher at the front and back, protecting you even when lying down. You can turn over, sleep on your back, or simply sleep soundly. Its enveloping boxer cut is worn like pajama bottoms, without chafing. Laboratory-tested absorption, on average 53% more effective than the heavy-flow period underwear available on the market, equivalent to 4 regular tampons.
During the day
Séléné period underwear · medium flow
Our best-selling model. Its seamless technology makes it invisible under clothing, twice as thin as most period underwear. Its lightweight, breathable microfiber provides a true second-skin feel, with the equivalent of 2 regular tampons. It's everyday protection: at the office, on the go, or under fitted jeans.
Both models offer up to 12 hours of protection, with no odor or damp feeling, thanks to their 3 layers of moisture-wicking, absorbent, and waterproof fabrics.
Why choose this duo instead of two of the same model
Because a cycle isn't linear. Your second and third days are generally the heaviest; the rest of the time, your flow is lighter.
- The right protection at the right time: the boxer for your nights and heaviest days, and the underwear for the rest of your cycle.
- One to wear while the other dries: while one is drying, you wear the other.
- Two cuts to try: discover which one suits you best before adding to your collection.
This is the duo we recommend for getting started with women's period underwear, as well as for adding to an existing collection.
Good to know
- Sizes: from XS/34 to XXL/44. If you're unsure, consult our size guide. Exchanges are free.
- Care: rinse in cold water after use, wash at 30 °C, and air-dry. Find all our advice in the care guide.
- Lifespan: approximately 5 years, or nearly 65 cycles.
- Certification: OEKO-TEX® STANDARD 100, certificate no. CQ 1285/1. Designed in Paris, with materials from France and Italy.
If your flow is very heavy, particularly in cases of endometriosis or perimenopause, we recommend adding a second Léto boxer so you can get through your nights without having to do an emergency load of laundry.
Manufacturing & environmental impact
La culotte de règles Smoon est certifiée OEKO-TEX® STANDARD 100.
Elles sont ensuite assemblées en Tunisie, pays reconnu pour son savoir faire en lingerie.
Impact environnemental
3 ans de règles = 3 culottes = 0.127kg de déchets VS 780 tampons ou serviettes = 4.5kg de déchets
Composition & maintenance
Matière principale : 80% polyamide, 20% elasthanne
Fond : 51% hydrophilamide, 42% polyamide, 7% elasthanne
Absorbant : 100% polyester
Membrane : 86% polyester, 14% polyuréthane
Pour consulter notre guide d'entretien, cliquez ici !
Delivery
🇫🇷 🇧🇪 🇱🇺 In mainland France, Belgium and Luxembourg :
- Free from €49 (Mondial Relay) // 3 to 6 working days by Colissimo (from €5.9)
- Free return via our return form
🇨🇭 In Switzerland :
- Free from 100€ // 4 to 10 working days by Chronopost.
- Customs fees may apply. For more information, click here .
- Free return via our return form
🇪🇺🌎 Rest of Europe and world :
- Between €7.9 and €12 depending on the amount of the basket and the destination // 5 to 10 days delivery without tracking.
- Returns at your expense
For any questions, consult our FAQ or contact us by email at contact@smoon-lingerie.com.









