• Two people wearing Ruby Cup period pants from the Only Pants Pack — Fearless in pink cheetah print and Flow Freedom in dusty rose
  • Four people wearing Ruby Cup period pants from the Only Pants Pack in a variety of styles, holding Ruby Cup menstrual cups and packaging
  • Flow Freedom period pants in burgundy folded to show absorbent layers, with text: Invisible Comfort, All-Day Protection, Leakproof Confidence
  • Comparison of Fearless and Flow Freedom period pants: Fearless is a low cut style for light days with a small built-in pad; Flow Freedom is a hipster cut for heavy flow with a full length built-in pad, nighttime approved
  • Three children in school uniform in Kenya, with text: 2% of our period underwear supports our nursery in Kenya
1 6

Only Pants Pack

Only Pants Pack

Reusable

5 Years

60-Day

Risk-Free Trial

Machine

Washable

Ultra-Thin

Built-In Protection

Safe For

Your Body

Leak Protection For Up To 12 Hours
Only Pants Pack

Why settle for one when you can have them all?
Flow through your period with our Only Pants Pack, combining Fearless and Flow Freedom period underwear. Washable, reusable, and totally reliable, these panties have you covered from your lightest to heaviest days.

The Details

Period pants made to follow life’s natural flows. Enjoy carefree movement day and night with Flow Freedom for heavy days, and feel confident and comfortable on lighter days with Fearless.

Planet-friendly and reusable, our period panties let you feel good while doing good.

Care Instructions

Ruby Cup Period Underwear:

Our period 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.

Social Impact

Periods shouldn’t stop anyone from living their best life. That’s why, for every Ruby Cup sold, we donate one to someone facing period poverty around the world. Thanks to our community and NGO partners, we’ve donated over 150,000 cups so far! Plus, 2% of every Ruby Cup period pants sale goes to a Learning Centre nursery in Kisumu, Kenya, built with our long-time partners, the Golden Girls Foundation, supporting early education and nurturing young minds.

The Ruby Standard

Because we’re determined to provide period products that are good for you and the planet, the fabrics used across our period underwear range are sourced from OEKO-TEX® STANDARD 100 certified materials. This means the materials have been tested for harmful substances, helping to ensure safety, comfort, and quality. We call that our pants priority.

Our range has also been rated as a Best Ethical Buy by The Good Shopping Guide.

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.

  • Menstrual Cups: Covered by our 120-day Money-Back Guarantee. If the cup isn’t the right fit, you can request a full refund or a size exchange within 4 months of purchase.
  • Period Panties: Covered 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.

These guarantees apply only to the products listed above. Sterilizers and other accessories follow our regular return rules.

Read more about our return policies here.

View full details

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FAQs About Ruby Cup Period Pants

What's the difference between Fearless and Flow Freedom period pants?

Fearless is our lighter-absorbency style, built for light days, spotting, or as backup with a tampon or cup. Flow Freedom is our highest-absorbency style, designed to be worn on its own on heavy days. The Only Pants Pack gives you one of each so you're covered across your whole cycle.

Can period pants be worn on their own on heavy flow days?

Yes, Flow Freedom is designed to be worn on its own on heavy days, with built-in absorbent layers rather than acting as backup for another product. Fearless, the lighter style in this pack, is better suited to lighter days or as backup rather than sole heavy-day protection.

What's included in the Only Pants Pack?

The Only Pants Pack lets you mix and match 3 to 5 pairs of period pants, choosing freely between Fearless and Flow Freedom to build the combination that fits your cycle — more light-day pairs, more heavy-day pairs, or a mix of both.

How long can you wear period pants before changing them?

Both styles offer leak protection for up to 12 hours, though how long you can comfortably wear them depends on your flow. Heavier days may need a change sooner, regardless of the pants' rated capacity.

Are period pants safe to wear overnight?

Yes, Flow Freedom's higher absorbency makes it a common choice for overnight wear, particularly on heavier nights. Fearless works for overnight protection on lighter flow.

How do you wash period pants?

Wash on a cold cycle and hang to air dry. Avoid fabric softener and bleach, and skip the tumble dryer and ironing: Heat and softeners break down the absorbent layers faster and shorten how long the pants stay effective.

How long do period pants last?

With proper care (cold wash, air dry, no fabric softener or tumble drying), Ruby Cup period pants last around 5 years on average, depending on wash frequency.

Is it cheaper to buy period pants as a pack?

Yes, the more pairs you bundle, the more you save: 15% off for a pack of 3, 20% off for 4, and 25% off for 5 or more, compared to buying pairs individually at full price.

Are Ruby Cup period pants safe and certified?

Yes, the fabrics are sourced from OEKO-TEX® STANDARD 100 certified materials, meaning they've been tested for harmful substances. The range has also been rated a Best Ethical Buy by The Good Shopping Guide.

What is the return policy for the Only Pants Pack?

Period pants are covered by a 60-day Try & Love It Guarantee. On this pack, one used pair is eligible for a refund or size exchange within 60 days; the other pairs in the bundle must be returned unopened in their original packaging within 30 days.
Read more