•
1 6

Flow Freedom Period Underwear

Flow Freedom Period Underwear

Color: Black
Size

Oeko-Tex

Certified

60-Day

Risk-Free Trial

Holds Up To 3 Super Tampons

Full-Length

Built-In Pad

Reusable

5 Years

Machine

Washable

Size guide
Trustpilot

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

  • Untracked shipping: £2–£8.50 depending on parcel size and destination (no tracking included)
  • Tracked shipping: £5.50–£15.00 depending on parcel size and destination
  • Delivery: 5–7 business days for tracked, 9–12 business days for untracked

RETURNS & EXCHANGES

We want you to feel confident with your Ruby Cup products. All our Period Panties are covered by our 60-day Try & Love It Guarantee. If you’re trying our underwear for the first time and they’re not right for you, you can get a refund for one used pair within 60 days. 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.

Read more about our return policies here.

View full details

You may also like

  • Ruby Cup period underwear fearless sustainable period care - Lilac

    Fearless Period Underwear

    Fearless Period Underwear

    £18.95
    £18.95 £18.95
  • Only Pants - Ruby Cup

    Only Pants Pack

    15% OFF

    Only Pants Pack

    £48.32
    £56.85 £48.32
    Sale
  • Red Ruby Cup period underwear and menstrual cup on a white background

    The Dynamic Duo

    20% OFF

    The Dynamic Duo

    £40.72
    £50.90 £40.72
    Sale
  • Ruby Cup Starter Pack with red menstrual cup, sterilizer, and Flow Freedom period underwear

    The Starter Pack

    25% OFF

    The Starter Pack

    £48.64
    £64.85 £48.64
    Sale
1 4

How to use

  • Step 1
    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.

Good to know

What are period pants?

Period pants, like Ruby Pants, are specially designed underwear to support your monthly flow. They feature built-in absorbent layers to replace conventional pads or tampons for a conscious and sustainable solution.

How do Ruby Cup 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.

Are Ruby Cup Period Underwear reusable?

Yes, Ruby Cup Period Underwear is 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 Underwear leak?

Ruby Cup Period Underwear is 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.

How do I choose the right absorbency level?

Ruby Cup Period Underwear is designed for the heaviest days of your flow. In fact, one pair of pants absorbs as much as 3 tampons or pads.

How long can I wear Ruby Cup Period Underwear?

The duration of wear depends on your flow and personal comfort. Some may wear them all day, while others may choose to change them more frequently. It's essential to monitor your flow and change your underwear as needed to maintain freshness and hygiene.

Are Ruby Cup Period Underwear safe for my health?

Absolutely. Our period underwear is Standard 100 by OEKO-TEX Certified, ensuring that every component is rigorously tested for harmful substances. Your health and safety are our top priority.

Does Ruby Cup Period Underwear support the fight against period poverty?

With every sale of Ruby Cup Period Underwear, 2% of the revenue goes to supporting education initiatives, such as the Learning Centre nursery in Kisumu, run by our long-term partners, the Golden Girls Foundation. This contribution helps nurture young minds and promote a love for learning.
Read more