Period Underwear Brief – Heavy Flow, 4-Layer Absorbent Gusset, Washable
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Details
Heavy flow · 4 absorbent layers · Washable
Period Underwear for Your Heavier Days
Pads that shift, tampons to keep track of, checking for leaks every time you stand up. This soft, seamless brief has a 4-layer absorbent gusset made for heavy flow days, and you can wear it for up to 12 hours, depending on your flow. Then simply rinse, wash and wear it again.

Real women, real days
Worn every day, washed and worn again

In everyday use

In everyday use

In everyday use

In everyday use

4-layer technology
Four layers that each do one job
The protection sits in the gusset, built from four layers:
- Comfort layer: the inner layer is soft and breathable, so it feels comfortable all day long.
- Absorbent layer: quick-drying, it spreads the flow evenly and helps you feel fresh.
- Moisture barrier: stops the flow from coming through and helps neutralise odours.
- Outer layer: waterproof and antibacterial, so you do not get a wet feeling.

Not bulky
Feels like your normal underwear
Only the absorbent area has extra layers, which makes that part a little thicker, but not in a way you see or feel. The rest of the brief is just as thin as regular underwear.
Because the layers take in the moisture, it does not feel wet against your skin. Most women do not notice the thickness while wearing it.

Days and nights
Up to 12 hours, depending on your flow
Made for heavy flow, this is the most absorbent version of the brief. Wear it to work, out for the evening or to bed, and let the layers do their job.
The antibacterial outer layer helps neutralise odours, so the underwear stays fresh while you wear it.
Size guide
Find your size by waist and hips
Most women find the brief fits true to size, so you can usually stay with your normal size. If you are between two sizes, choose the larger one. The model is 173 cm (5 ft 8 in) tall and wears a size M.
| Size | Waist (cm) | Hips (cm) | UK size | Waist (in) | Hips (in) |
|---|---|---|---|---|---|
| S | 69–74 | 91–97 | 6–8 | 27–29 | 36–38 |
| M | 74–79 | 97–102 | 8–10 | 29–31 | 38–40 |
| L | 79–86 | 104–109 | 10–12 | 31–34 | 41–43 |
| XL | 86–91 | 109–114 | 12–14 | 34–36 | 43–45 |
| 2XL | 91–97 | 114–119 | 14–16 | 36–38 | 45–47 |
| 3XL | 99–102 | 122–127 | 16–18 | 39–40 | 48–50 |
| 4XL | 104–109 | 127–132 | 18–20 | 41–43 | 50–52 |
| 5XL | 112–117 | 135–140 | 20–22 | 44–46 | 53–55 |
| 6XL | 117–122 | 140–145 | 22–24 | 46–48 | 55–57 |
Colours
Four soft colours

Pastel mint

Pastel pink

Pastel blue

Black
Good to know
Washable, reusable and easy to plan
Care
How to wash it
1. Rinse
Rinse the underwear with cold water after wearing.
2. Wash at 30°C
Put it in a laundry bag and wash at 30°C with a mild detergent.
3. Hang to dry
Let it air dry. Do not use bleach or fabric softener.
Questions people ask
Is it hygienic?
Yes. The outer layer is antibacterial and helps neutralise odours, so the underwear stays clean and fresh while you wear it.
How long can I wear it?
Up to 12 hours, depending on how heavy your flow is. This heavy-flow version is the most absorbent.
Will it smell?
The antibacterial layer helps neutralise unwanted odours, so it stays fresh through the day.
Does it feel wet?
No. The 4 layers absorb the moisture, so it does not feel wet against your skin.
Does it feel bulky?
Most women do not notice the thickness. Only the absorbent area has extra layers; the rest is as thin as regular underwear.
How many pairs do I need?
One pair for the day and one for the night. At least 4 pairs lets you always have a clean pair ready while you wash the others.
How do I choose my size?
Use the size guide above. Most women stay with their usual size. Between two sizes, choose the larger one.
Specifications
- Style: brief
- Absorbency: heavy flow
- Wear time: up to 12 hours, depending on your flow
- Protection: 4-layer absorbent gusset: comfort layer, absorbent layer, moisture barrier, waterproof antibacterial outer layer
- Sizes: S to 6XL (waist 69 to 122 cm)
- Colours: pastel mint, pastel pink, pastel blue, black
- Care: rinse cold, wash at 30°C in a laundry bag, air dry
What's in the box
- 1 × period underwear brief