Where are you browsing from today?

USA flag

US
EU / UK

Ethical Clothing
USA flag

Sustainable Sustainable-Synthetic Underwear

Shop for sustainable-synthetic underwear from the top ethical and sustainable clothing brands in the United States

116 Products | Page 1 of 3 | On Sale Selected

Page 1 of 3 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 70.00
  • 125.00
APEX Evolution Trunk by Kelly Slater - Outerworn
Outerknown
APEX Evolution Trunk by Kelly Slater - Outerworn
  • 65.00
  • 168.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 90.19
  • 145.00
APEX Evolution Trunk by Kelly Slater 17"
Outerknown
APEX Evolution Trunk by Kelly Slater 17"
  • 118.00
  • 168.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 85.00
  • 145.00
Dip swim trunks
Namuk
Dip swim trunks
  • 29.00
  • 35.00
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
Outerknown
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
  • 67.00
  • 168.00
APEX Evolution Trunk by Kelly Slater 17"
Outerknown
APEX Evolution Trunk by Kelly Slater 17"
  • 101.00
  • 168.00
Coral Keep It Brief Bikini Bottom
Loop Swim
Coral Keep It Brief Bikini Bottom
  • 48.00
  • 68.00
Neo Keep It Brief Bikini Bottom
Loop Swim
Neo Keep It Brief Bikini Bottom
  • 48.00
  • 68.00
Band Brief in Sage
Galamaar
Band Brief in Sage
  • 50.00
  • 118.00
The Invisible High-Rise Hipster | Plum Grey
Everlane
The Invisible High-Rise Hipster | Plum Grey
  • 10.00
  • 18.00
Tie Brief in Erba
Galamaar
Tie Brief in Erba
  • 72.00
  • 124.00
Oceania Keep It Brief Bikini Bottom
Loop Swim
Oceania Keep It Brief Bikini Bottom
  • 48.00
  • 68.00
Slim Line Brief in Rouge
Galamaar
Slim Line Brief in Rouge
  • 50.00
  • 124.00
Tie Brief in Hibiscus
Galamaar
Tie Brief in Hibiscus
  • 86.00
  • 124.00
The Perform Bra® | Black / Breen Floral
Everlane
The Perform Bra® | Black / Breen Floral
  • 24.00
  • 48.00
Living Coral Keep It Brief Bikini Bottom
Loop Swim
Living Coral Keep It Brief Bikini Bottom
  • 48.00
  • 68.00
The Perform Pocket Legging | Pear
Everlane
The Perform Pocket Legging | Pear
  • 23.00
  • 78.00
French Brief in Hibiscus
Galamaar
French Brief in Hibiscus
  • 91.00
  • 122.00
The Seamless Bra | Dusty Lavender
Everlane
The Seamless Bra | Dusty Lavender
  • 7.00
  • 35.00
Terra Bralette Top - Sandbar Stripe Crepe Texture
Vitamin A
Terra Bralette Top - Sandbar Stripe Crepe Texture
  • 63.00
  • 125.00
Skinny Brief in Noir
Galamaar
Skinny Brief in Noir
  • 50.00
  • 115.00
Curve Brief in Zebre
Galamaar
Curve Brief in Zebre
  • 94.00
  • 118.00
Slim Line Brief in Aquarius
Galamaar
Slim Line Brief in Aquarius
  • 93.00
  • 124.00
High Kick Brief in Sweet Jane
Galamaar
High Kick Brief in Sweet Jane
  • 72.00
  • 124.00
The Seamless Bra | Acorn
Everlane
The Seamless Bra | Acorn
  • 11.00
  • 35.00
Band Brief in Persimmon
Galamaar
Band Brief in Persimmon
  • 50.00
  • 122.00
High Kick Brief in Lido
Galamaar
High Kick Brief in Lido
  • 93.00
  • 124.00
The Perform Flare Legging | Beech
Everlane
The Perform Flare Legging | Beech
  • 26.00
  • 88.00
High Kick Brief in Erba
Galamaar
High Kick Brief in Erba
  • 62.00
  • 124.00
Moss Bralette Top - Creamsicle EcoRib
Vitamin A
Moss Bralette Top - Creamsicle EcoRib
  • 45.00
  • 100.00
The Perform Longline Bra | Ocean Blue
Everlane
The Perform Longline Bra | Ocean Blue
  • 23.00
  • 58.00
Poppy Bralette - Banana Cream Beachside Terry
Vitamin A
Poppy Bralette - Banana Cream Beachside Terry
  • 50.00
  • 100.00
The Seamless Bra | Black
Everlane
The Seamless Bra | Black
  • 14.00
  • 35.00
O-Ring Brief in Noir
Galamaar
O-Ring Brief in Noir
  • 50.00
  • 124.00
The Perform Pocket Legging | Atlantic
Everlane
The Perform Pocket Legging | Atlantic
  • 23.00
  • 78.00
The Perform Pocket Legging | Scarab
Everlane
The Perform Pocket Legging | Scarab
  • 23.00
  • 78.00
The Perform Legging® | Black / Breen Floral | Regular
Everlane
The Perform Legging® | Black / Breen Floral | Regular
  • 23.00
  • 78.00
Curve Brief in Sweet Jane
Galamaar
Curve Brief in Sweet Jane
  • 59.00
  • 118.00
The Yuba Trunk in Olive Print
Taylor Stitch
The Yuba Trunk in Olive Print
  • 59.00
  • 88.00
The Yuba Trunk in Yellow Print
Taylor Stitch
The Yuba Trunk in Yellow Print
  • 39.00
  • 88.00
High Kick Brief in Persimmon
Galamaar
High Kick Brief in Persimmon
  • 93.00
  • 124.00
Lyra Bralette Top - Brick Riviera Ripple
Vitamin A
Lyra Bralette Top - Brick Riviera Ripple
  • 60.00
  • 120.00
Band Brief in Erba
Galamaar
Band Brief in Erba
  • 61.00
  • 118.00
Upcycled Scoop Bralette Top - Berry EcoLux
Vitamin A
Upcycled Scoop Bralette Top - Berry EcoLux
  • 52.00
  • 65.00
Tie Brief in Bisou
Galamaar
Tie Brief in Bisou
  • 62.00
  • 124.00
The Perform Bra® | Atlantic
Everlane
The Perform Bra® | Atlantic
  • 19.00
  • 38.00

Filter By

Bras (75)
Leggings (45)
Lingerie (7)
Panties (1)
Stockings (5)
Thongs (19)
Kids (10)
Men (40)
Unisex (5)
Women (283)
Underwear (338)
All
Bamboo (1)
Cotton (77)
Lyocell-Tencel (23)
Organic-Cotton (5)
Silk (1)
Sustainable-Synthetic (231)
All
Anekdot Boutique (11)
Beaumont Organic (2)
Boob Design (1)
Colieco (32)
Colorful Standard (35)
Ecoalf (48)
I Love Lowie (1)
Isto (4)
Lanius (4)
Lovjoi (1)
Matona (11)
Olly (5)
Organic Basics (53)
Organic Zoo (1)
Planet Warrior (20)
Slugs And Snails (1)
Smafolk (2)
Swedish Stockings (92)
Thought (14)
Austria (11)
Germany (16)
Denmark (90)
Spain (48)
France (5)
United Kingdom (38)
Ireland (1)
Portugal (36)
Sweden (93)
Sales only
Ethical Clothing Logo Be the first to know when North America's top ethical brands are on sale, sign up to our newsletter here