Organic Cotton Set

$89($100 Value)
60-day trial
+ free returns
Don’t love 'em?
Get your $ back
no Qs asked

carousel nav360, Cotton Bikini, Cotton Brief, flat, detail

360
Cotton Bikini
Cotton Brief
flat
detail

Organic Cotton Set

$89($100 Value)

what's inside

Cotton Brief 
absorbency chart02 (1)

moderate absorbency

Cotton Bikini 
absorbency chart02 (1)

moderate absorbency

  • Cotton Brief
  • Cotton Bikini
holds
  • regular tampon
  • menstrual cup
  • pantyliner
  • regular pad
  • mL
worth

Size

- low stock size chart
size chart

Color

- new color

Quantity

is on back order.
This item will ship

style + fit

Comfy, relaxed, & breathable — keep it *au naturale* with a set of our organic cotton undies.

“The Organic Cotton Brief and Bikini are the perfect combo. They're both extra comfy, and keep me feelin' fresh on my super sweaty commute.”

Erika from Chicago, IL, medium to heavy

style + fit

Comfy, relaxed, & breathable — keep it *au naturale* with a set of our organic cotton undies.

“The Organic Cotton Brief and Bikini are the perfect combo. They're both extra comfy, and keep me feelin' fresh on my super sweaty commute.”

Erika from Chicago, IL, medium to heavy

60-day trial

Try Thinx for 60 days, if it doesn't help you period better, we'll give you a refund. No questions asked!

fabric

fabric

Cotton Bikini

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL

Cotton Brief

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL


Our underwear has been successfully tested for harmful substances and certified according to STANDARD 100 by OEKO-TEX®️ [20.HUS.04850 | HOHENSTEIN HTTI]

care instructions

care instructions

To take care of your Thinx, give ‘em a spin in the washing machine on cold (just no softener or bleach!), and hang dry. Do not iron!

period underwear that works

fabric

Cotton Bikini

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL

Cotton Brief

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL


Our underwear has been successfully tested for harmful substances and certified according to STANDARD 100 by OEKO-TEX®️ [20.HUS.04850 | HOHENSTEIN HTTI]

care instructions

To take care of your Thinx, give ‘em a spin in the washing machine on cold (just no softener or bleach!), and hang dry. Do not iron!

period underwear that works

fabric

Cotton Bikini

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL

Cotton Brief

body 95% organic cotton, 5% elastane
gusset 95% cotton, 5% elastane; middle breathable PUL


Our underwear has been successfully tested for harmful substances and certified according to STANDARD 100 by OEKO-TEX®️ [20.HUS.04850 | HOHENSTEIN HTTI]

care instructions

To take care of your Thinx, give ‘em a spin in the washing machine on cold (just no softener or bleach!), and hang dry. Do not iron!

XXS

XS

S

M

L

XL

XXL

3XL

cups

pads | liners

discs

other

light

moderate

heavy

FAQs

What is your return policy?

We offer free returns and exchanges within 60 days of purchase, no questions asked! Just visit the Thinx Inc. Return & Exchange Center to get started.

How do Thinx work?

Thinx are underwear that absorb your period. Every pair is made with a patented design and our signature technology that absorbs your flow, wicks moisture, controls odor, and prevents leaks — leaving you fresh and dry. Take a look at our How it Works page to learn more.

How long can I wear Thinx?

We measure our undies by absorbency with our highest absorbency styles holding 4 tampons worth of fluid. For some customers, that means wearing them the whole day and for others that may mean carrying an extra pair of Thinx as a backup. If you have more questions, please try our Know Your Flow quiz.

How do I know what size to buy?

We recommend following the hip measurement, as most of our styles sit on the hips. Be sure to measure your hips at their widest point (derriere included!) to find the most accurate size for you! In case you don't have a tape measure, you can use the size you usually are most comfortable with for your underwear. We recommend the undies fit snuggly, but not so tight that it's uncomfortable. For reference, you can check out our Thinx size chart.

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