Size | Waist (in) | Waist (cm) | Hips (in) | Hips (cm) |
---|---|---|---|---|
XS | 24.4-26.4 | 62-67 | 33.5-35.4 | 85-90 |
S | 27.2-28.7 | 68-73 | 35.8-37.8 | 91-96 |
M | 29.1-31.1 | 74-79 | 38.2-40.2 | 97-102 |
L | 31.5-33.5 | 80-85 | 40.6-42.5 | 103-108 |
XL | 33.9-35.8 | 86-91 | 42.1-44.9 | 109-114 |
2XL | 36.2-38.2 | 92-97 | 45.3-47.2 | 115-120 |
3XL | 38.6-40.9 | 98-104 | 47.6-50 | 121-127 |
4XL | 41.3-43.3 | 105-110 | 50.4-52.4 | 128-133 |
Ruby Cup Period Underwear
Ruby Cup Period Underwear
Planet-friendly underwear that gives you peace of mind with every wear. From light to heavy flows, our reusable period pants have period-proof protection you can count on.
The details
The details
Period pants made to follow life’s natural flows. Our Flow Freedom period pants are thoughtfully designed so you can enjoy carefree movement – day and night – with ultimate comfort and confidence.
Our planet-friendly pants are reusable and washable so you can feel good while doing good.
The good stuff
The good stuff
Care instructions
Care instructions
Our Flow Freedom pants are built to last. Care for them easily with these simple steps:
- Wash on a cold wash and hang to air dry
- Avoid fabric softener and bleach
- Steer clear of tumble drying, or ironing
Product composition:
- Inner layers – 80% Polyester and 20% Nylon
- Middle layer – 100% Polyester for extra absorbency
- Outer layer – 78% Nylon and 22% Spandex for a soft and secure fit
Social Impact
Social Impact
Periods shouldn’t stop anyone from living their best life. That’s why we’re breaking down barriers for people with periods everywhere. With sustainable, premium products that are accessible to all, we deliver real social impact across the globe.
We’re committed to supporting education and working with like-minded organizations to create lasting change. For every sale of Flow Freedom period pants, we proudly donate 2% of the revenue to our Learning Centre nursery based in Kisumu, Kenya. We built the nursery with our long time partners, Golden Girls Foundation, and today your support and our donations continue to contribute to nurturing young minds and inspire a love for learning.
The Ruby standard
The Ruby standard
Because we’re determined to provide period products that are good for you and the planet, our Flow Freedom period pants are Standard 100 by OEKO-TEX Certified. This means each component is rigorously tested for harmful substances, making sure they pass the test for health and safety without compromising on comfort and quality. We call that our pants priority.
Shipping and returns
Shipping and returns
Ruby Cup Money Back Guarantee
Not completely in love with your Ruby Cup? No stress. Our Money Back Guarantee is valid within 120 days from your original purchase, so you can return your Ruby Cup or change size, hassle free.
Simply fill in the Return Form, pop your cup in the post and
we’ll send you a different size or process your refund (all you’ll need to do is cover the shipping cost).
Our Money Back Guarantee is available for Ruby Cup purchases (but not our other products). It's only valid once, so no double swapsies or refunds after trying a different
size. Check out our T&Cs for more details.
Flexible returns for peace of mind
We get it – sometimes you might just change your mind. That’s why we offer easy exchanges or credits. Here’s how it works:
- Return your products within 30 days of receiving them
- Make sure they’re unopened, in original condition, with tags still attached (where applicable)
- For bundles: You can try on one item, but the rest must stay unopened. Send the whole pack back together – no individual returns from a bundle please!
Need to return something? Drop us an email to hello@rubycup.com with details of the product(s) you’re returning. You’ll need to cover the return shipping (we recommend using a tracked service to avoid any mishaps).
Shipping
United Kingdom
Tracked shipping:
Free for all orders
Worldwide
Untracked shipping:
Between £2-£8.5 depending on your parcel size and shipping destination
(Please take into account that no tracking is included)
Tracked shipping
Between £5.50-£15.00 depending on your parcel size and shipping destination
Shipping times:
Tracked shipping: 5-7 business days from fulfillment date
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How to use
-
Step 1Wear your Flow Freedom pants as regular underwear during your Ruby days. They’re safe to wear all day.
-
Step 2When you feel like the time is right, rinse your pants with cold water.
-
Step 3Wash your period pants in the washing machine on a cold cycle and let them air dry before wearing them again.