The Undyed Bikini Brief
The Undyed Bikini Brief
The Undyed Bikini Brief
The Undyed Bikini Brief
Ellie is 5'5" and wears size S.
Ellie is 5'5" and wears size S.

The Undyed Bikini Brief

Ellie is 5'5" and wears size S.
3 reviews
- +
Future Circular Price: $12 (What's that?)

(Size guide)

Zero waste meets zero dye. A match made in heaven, on Earth. In our best-selling, seriously comfortable, impossible-to-find, bikini brief fit.

Undyed = better for your skin and better for our planet. Undyed fabrics require significantly less resources and processing than their dyed counterparts. Each of our super soft, natural Undyed Bikini Briefs saves:

  • 3L water
  • 0.3kg steam energy
  • 1kg CO2 electricity emissions

TBF 101: Transportation for all our understuff is Carbon Neutral through offsets via Cool Effect.

Dealer’s Choice: wear it straight or hike it up like a lady from the 90s. Plastic-free and ethically made in Peru on a living wage.

Please see our return policy here

100% Pima Cotton
Plastic-Free Fabric
Reduced Water Waste
Fair Wage


The Undyed Thong. No VPL, no problem. Take a look at this other super soft and circular style.

Shop The Undyed Thong

Customer Reviews

5.0 Based on 3 Reviews
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Ryan T.
United States

Grab a pair or two

Wear these to bed and out and some of the most comfortable underwear I have worn. Great for anyone. Way to go TBF. Cheers

Theresa M.
United States United States
I recommend this product

comfy and earth friendly? sign me up!

absolutely love my TBF underwear! i originally bought a three pack (in white) and am working on replacing my whole underwear drawer with these bikini briefs. the fabric is SOOO soft and absolutely lovely on the skin. i also love how these are undyed -- though it makes me think they might just be ripe for some natural dyeing experiments! and of course i am SO excited to have them be part of the circular economy when it's time to put them to rest. i'm trying to convince everyone i know to give these a try -- everyone i know who i'm close enough with to talk underwear choices at least haha!

Shanasia S.
United States United States

Gets the Job Done

These are great! Within minutes of putting them on, I forget they are there which is exactly what I want out of my underwear. I find this fit is a bit more flattering for us shorter gals than the thong.