Thinx Sport-Underwear-Sancho's Dress THINX Sport Pants in Black
Thinx Sport-Underwear-Sancho's Dress THINX Sport Pants in Black

THINX Sport Pants in Black

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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. 


Price 1 - reflects and covers our cost of sale

Price 2 - Leaves us with the opportunity to re-invest £5-£8 into the business and our development

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. 

Customer Reviews

Based on 7 reviews

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

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.

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.

Bought two styles, preferred the other

I'm just more of a high-waisted kinda girl. These feel a little thicker than the hi-waist briefs and don't sit as snugly around your body. Still, they stayed put all day (no wriggling panty lines) and did the job without any issue. Just like wearing bikini bottoms under your jeans, so not too thick atall, and I'm sure plenty of people prefer a lower waist. Size guide on the Thinx site is very useful because it includes a round-the-butt measurement.

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