Our Flow Freedom period panties are comfy, eco-friendly, and built for heavy flow days. With enough protection for up to 3 tampons (50 ml capacity), they’ve got you covered all cycle long, even on your heaviest days.
The Details
Period pants made to follow life’s natural flows, thoughtfully designed for carefree movement day and night. Soft, stretchy, and reusable, they let you wave goodbye to leaky pads while staying comfortable and confident. The hipster style offers protection under every outfit, and depending on your flow, you can wear them for up to 12 hours.
Planet-friendly and washable, our Flow Freedom panties let you feel good while doing good.
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
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 a 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
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 & Returns
UNITED KINGDOM:
Tracked shipping: Free on all orders
Delivery: 2 business days from fulfillment
WORLDWIDE:
Tracked shipping: £5.00–£32.00 depending on parcel size and destination
Delivery: 5–10 business days, depending on destination
RETURNS & EXCHANGES
We want you to feel confident with your Ruby Cup products. All our Period Panties arecovered by our 60-day Try & Love It Guarantee. If you’re trying our underwear for the first time and it’s not right for you, you can get a refund for one used pair within 60 days, provided the panty is returned to us. If you purchased a bundle, only one used pair is eligible for a refund or a size exchange; all other items follow our standard return policy and must be returned unopened in their original packaging within 30 days of receiving them.
Wear your Flow Freedom pants as regular underwear during your Ruby days. They’re safe to wear all day.
Step 2
When you feel like the time is right, rinse your pants with cold water.
Step 3
Wash your period pants in the washing machine on a cold cycle and let them air dry before wearing them again.
FAQs About Ruby Cup Period Pants
How do Ruby Cup Flow Freedom Period Underwear work?
Ruby Period Underwear has multiple absorbent layers, including an inner layer of polyester and nylon blend and a middle layer of polyester for enhanced absorption. These additional layers trap your menstrual fluid, keeping you feeling dry and fresh throughout your cycle.
What sizes are available for Ruby Cup Period Underwear?
Ruby Cup Period Underwear comes in various sizes to suit different body types. Our sizes range from XXS to 4XL. Check our size guide to find the perfect fit for you.
What's the difference between Flow Freedom and Fearless Period Pants?
Flow Freedom is Ruby Cup's heavy-flow pant, holding up to 50ml (3 tampons), with full front-to-back coverage. Fearless is a lighter, ultra-thin style designed for lighter days or backup use with a menstrual cup. Most people benefit from having both.
Are Ruby Cup Period Pants certified safe?
Yes — they are OEKO-TEX Standard 100 certified, meaning every component has been rigorously tested and confirmed free from harmful substances.
Are Ruby Cup Period Pants reusable?
Yes, Ruby Cup Period Pants are reusable, making them eco-friendly and cost-effective. Simply rinse them in cold water after use and hang dry. Avoid using fabric softener, bleach, tumble drying, or ironing to maintain their quality and performance.
Do Ruby Cup Period Pants leak?
Ruby Cup Period Pants are designed to provide leak protection and peace of mind. The absorbent layers and secure fit help prevent leaks during normal wear. However, it's crucial to choose the appropriate absorbency level for your flow and change them as needed.
Do period pants smell?
No — when made with quality materials and changed within the recommended timeframe, period pants don't smell during wear. The absorbent layers trap fluid and lock in odour. Rinsing promptly after removal prevents any build-up.
How do I wash period pants?
Rinse in cold water until the water runs clear, then machine wash on a cool cycle with gentle detergent. Air dry only — never tumble dry.
How long can I wear period pants?
Between 8 and 12 hours for most people, though this varies with flow. If you notice wetness or detect an odour before the 12-hour mark, it's time to change into a fresh pair.
How many tampons can one pair of period pants absorb?
Ruby Cup's Flow Freedom pants absorb the equivalent of three tampons (50ml). Fearless Underwear absorbs the equivalent of two light tampons. How long they last depends on your personal flow.
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