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THINX Underwear noos THINX Sport Pants in Black
THINX Underwear noos THINX Sport Pants in Black


THINX Sport Pants in Black

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Hassle Free Returns

You can return any item you are not 100% happy with within 30days of the item arriving to your delivery address for full cash back.

If you've started to think about how periods are a bloody nightmare for the environment, then these period-proof undies are a great solution to having a more eco-friendly menstruation. They look and feel like regular underwear, but can hold up to 2-days tampons' worth!

They can be worn as a back-up or replacement to traditional period products, depending on your flow (light, medium or heavy). It can replace pads and liners, or be worn with tampons and cups for extra protection.

Key Features

  • Made from 89% nylon, 11% elastane (body) & 95% cotton, 5% elastane; middle breathable PUL (Gusset)
  • Created especially for moving about.
  • Full coverage fit with protection designed to keep you fresh 'n' dry.

Care Instructions

  • Rinse first
  • Pop in a mesh laundry bag
  • Cold wash and hang to dry
  • Don't use bleach or fabric softener. 


Please use the size chart to get your correct size, they should fit snug to prevent leakage. Measure yourself at the widest part of your bum to get the correct hip measurement.

Please note: We will not be able to accept returns or exchanges on this item due to hygiene reasons. Thank you for your understanding. 

THINX Underwear noos THINX Sport Pants in Black
THINX Underwear noos THINX Sport Pants in Black

Customer Reviews

Based on 8 reviews
Great for runners

I just ran nine miles in these on a light day and had zero chaffing. Running without a pad is game changer. They were even more comfortable to run in then my regular underwear, so tempted to save them for my long runs every week.

Hi Maria! Thank you so much for your review. It is great to hear that these are perfect for exercise! Thank you for supporting our small business.


Great product- I’m converted!


Big fan of thinx pants as a sustainable option as someone who isn't able to use something like a moon cup. These were perfect for a light day

Jade Bratkowski
They arrived!!

It took a while for me to decide to just go ahead and get two pairs to test, but for once I got the right size from the start. Even better: both the hip hugger and the sport pants turned out to be the perfect fit for me! I will get some extra as soon as I can, even though I managed to go the full week just with the two of them, washing (by hand when no other laundry needed to be washed) every day. Just couldn’t go back to the old way of producing waste.
Also: this all makes me extra super happy that I paid one forward. Everyone deserves to not worry so much when on their period.

Isabelle Ascah-Coallier
Comfy and pretty

I have been using menstrual cup for 20 years. But I wanted something different for night or light days. This is so much better than reusable pad. It is comfy, doesn't stain. My only little concern is it stay wet for a few minutes after you bleed. But really happy with it. I will get another pair for sure.