2+ items
10% off
A strong start
Period pants mid rise brief knickers reusable washable absorbent leakproof blue
All-day protection — designed for heavy flow comfort
Feel-good fabric — soft, breathable and leak-resistant
In stock — shipped via Royal Mail
Size guide
Units
| Size | Hipline |
|---|---|
| XXS | Less than 74 cm |
| XS | 74 – 80 cm |
| S | 80 – 88 cm |
| M | 88 – 96 cm |
| L | 96 – 104 cm |
| XL | 104 – 110 cm |
| XXL | 110 – 116 cm |
| 3XL | 116 – 122 cm |
| 4XL | More than 122 cm |
How to measure
Hipline: Measure the fullest part of your hip, keeping the tape straight and snug.
💡 Between two sizes? Choose your regular size. We offer free exchanges within 60 days.
Stay comfortable and confident in our Classic Brief period underwear. It feels like your everyday underwear while giving steady leak protection for medium to heavy flow, so you can get on with your day.
- Reliable leak protection The slim built-in absorbent lining handles period blood and helps prevent leaks.
- Soft, breathable comfort Gentle fabric stays in place without digging in or feeling bulky.
- Front-to-back coverage Made for medium to heavy days during work, sleep, travel, or movement.
Dark inner lining helps control odour and reduce stains. A reusable alternative to disposable pads, liners, or tampons.
Flow: Medium to Heavy
Absorbency: Up to 20–25 ml
Tampons equivalent: Up to 4–5 tampons*
Perfect for: Everyday wear, workdays, sleep, travel
Feels: Soft and secure
*Based on 5 ml tampon
Care: Rinse after use, gentle cold machine wash, hang to dry, reuse and repeat.
Fabrication:Outer: 95% Organic Cotton / 5% ElastaneGusset Top Layer: 85% Polyester / 15% ElastaneMiddle Layer: 80% Polyester / 20% PolyamideBottom Layer: 100% PolyesterExcludes trims
Within one business day, you will receive a tracking number by email so you can follow the current status of your delivery. Shipping within the UK is free.
📦 For more information on shipping, please visit our Shipping Policy
At Saint Dor we are always here for you. You can reach us at any time of the day and count on our dedicated customer service team to help with any questions and needs.
Use the contact form or send an email to info@saintdor.uk to get in touch.
You can pay securely with American Express, Apple Pay, Google Pay, Maestro, Mastercard and Visa.
Your data is well protected thanks to an encrypted SSL connection – personal information such as payment and account details are transmitted securely.
The protection of your privacy is very important to us. We treat your data strictly confidential, do not share it with third parties and only use it for necessary purposes. It is then deleted.
👉 For more information, visit our Payment & Billing Terms page.
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Technology
4 layers. Zero leaks.
Only 1mm thicker than regular underwear — yet holds up to 10 tampons' worth of flow. Here's what's inside.
1
Stay Dry Layer
Wicks moisture away from your skin in seconds. You stay dry even on your heaviest days.
2
Absorbent Core
Locks fluid in and neutralises odour. Antibacterial, washable for 100+ cycles.
3
Leak-Proof Barrier
Waterproof membrane that nothing gets through. Sleeping, sitting, moving — covered.
4
Soft Touch Outer
Bamboo-blend fabric that feels like your favourite underwear. No bulk, no rustling.
Ultra breathable
Stays cool all day long
High absorption
Holds up to 10 tampons' worth
Leak-proof
Waterproof barrier on all sides
Absorbency up to 5 tampons worth
The real cost of disposables
See how much you'll save
Drag the slider to match your daily usage. The numbers might surprise you.
How many pads or tampons do you use per day?
During your period
Pads & tampons
What you spend per year
£90.00
300 disposables thrown away
Saint Dor
One-time investment
£34.95
3-pack · lasts 2+ years · zero waste
Save £145.05
over 2 years compared to disposables
That's 600 fewer pads and tampons in landfill. Each one takes 500+ years to break down.
Worn every day
Comfort you'll actually feel.
Soft, secure and made for your life — not just your period.
Why switch
Protection built for heavy flow.
Most period products are made for average flow and sold as though they handle everything. Saint Dor isn't.
Saint Dor
Pads & tampons
Sleep without waking up
No more 3am checks or ruined sheets
No leak anxiety at work
Sit through meetings without worrying
Wear what you want
Light colours, no second-guessing
Stays in place
No shifting when sitting, sleeping or moving
Saves money, cuts waste
Lasts 100+ washes, no plastic waste
Feels like normal underwear
No bulk, no rustling
Ready to make the switch?
Free shipping across the UK
The questions worth asking
Everything you need to know before you try them.
-
A lot of period underwear is built for light days but sold as though it handles everything. Each style is designed for a specific flow and situation — the Night Short for lying down, the High Waist Short for heavy flow, the Period Slip for lighter days. Getting the right style for your flow is what makes the difference.
-
No — this is the thing most people are surprised by. The absorbent layer is thin, sits flat, and wicks moisture away so you don't feel damp. Nothing bunches, nothing shifts. Most customers say it feels closer to normal underwear than anything they expected.
-
Night leaks usually happen because standard underwear doesn't cover far enough at the back. The Night Short has a longer absorbent panel designed specifically for lying down — it stays in place however you sleep. No more waking up to check.
-
It really isn't. Rinse cold, wash at 30°C, hang to dry. No soaking, no special products. A set of four pairs gets you through your full cycle without any mid-week rushing.
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Period underwear won't change your cycle — but it can reduce how much headspace it takes up. When you trust what you're wearing, you stop planning around the worst case. A lot of customers say they didn't realise how much mental energy their period was costing them until it stopped.
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Most people spend between £80 and £150 a year on disposables. Four pairs cover your full cycle and last for years — within a few months they've paid for themselves. No monthly shop, no running out at the wrong moment, no waste.