Where are you browsing from today?

USA flag

US
EU / UK

Ethical Clothing
USA flag

Sustainable Underwear

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

675 Products | Page 1 of 15 | On Sale Selected

Page 1 of 15 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Nomadic Volley - Outerworn
Outerknown
Nomadic Volley - Outerworn
  • 46.00
  • 78.00
Nomadic Stretch Trunks - Outerworn
Outerknown
Nomadic Stretch Trunks - Outerworn
  • 50.50
  • 78.00
Tasty Scallop Trunks - Outerworn
Outerknown
Tasty Scallop Trunks - Outerworn
  • 60.00
  • 128.00
Granville Legging
Ten Tree
Granville Legging
  • 47.60
  • 68.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 120.00
  • 145.00
Brooks Leggings
Jungmaven
Brooks Leggings
  • 78.00
  • 98.00
InMotion Double Scoop Bra
Ten Tree
InMotion Double Scoop Bra
  • 46.40
  • 58.00
Surf Ranch Apex Trunks by Kelly Slater - Outerworn
Outerknown
Surf Ranch Apex Trunks by Kelly Slater - Outerworn
  • 135.00
  • 155.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 70.00
  • 145.00
Granville Legging
Ten Tree
Granville Legging
  • 54.40
  • 68.00
Atlin Legging
Ten Tree
Atlin Legging
  • 62.40
  • 78.00
Granville Legging
Ten Tree
Granville Legging
  • 47.60
  • 68.00
All Time Scallop Trunks
Outerknown
All Time Scallop Trunks
  • 69.00
  • 98.00
APEX Evolution Trunk by Kelly Slater 17"
Outerknown
APEX Evolution Trunk by Kelly Slater 17"
  • 118.00
  • 168.00
All Time Scallop Trunks
Outerknown
All Time Scallop Trunks
  • 39.00
  • 98.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 120.00
  • 145.00
APEX Trunks By Kelly Slater - Outerworn
Outerknown
APEX Trunks By Kelly Slater - Outerworn
  • 91.00
  • 145.00
Evolution Trunk - Outerworn
Outerknown
Evolution Trunk - Outerworn
  • 38.35
  • 85.00
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
Outerknown
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
  • 67.00
  • 168.00
Granville Legging
Ten Tree
Granville Legging
  • 47.60
  • 68.00
Organic Cotton High Rise Legging
Ten Tree
Organic Cotton High Rise Legging
  • 24.00
  • 30.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 91.00
  • 145.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 130.00
  • 145.00
Mens Boxer
This Is J
Mens Boxer
  • 36.90
  • 41.10
All Time Scallop Trunks
Outerknown
All Time Scallop Trunks
  • 39.00
  • 98.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 46.40
  • 58.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 46.00
  • 145.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 70.00
  • 125.00
The Everyday Bra
Ten Tree
The Everyday Bra
  • 36.00
  • 45.00
Elfin Bra
Ten Tree
Elfin Bra
  • 40.60
  • 58.00
Nomadic Stretch Trunks - Outerworn
Outerknown
Nomadic Stretch Trunks - Outerworn
  • 55.00
  • 98.00
Apex Trunks By Kelly Slater - Outerworn
Outerknown
Apex Trunks By Kelly Slater - Outerworn
  • 118.00
  • 145.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 85.00
  • 145.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 80.00
  • 145.00
Mens Boxer
This Is J
Mens Boxer
  • 36.90
  • 41.10
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 70.00
  • 145.00
Pre-Loved Organic Pima Cotton Wrap Front Bodysuit ♻️
Hello Jackalo
Pre-Loved Organic Pima Cotton Wrap Front Bodysuit ♻️
  • 12.00
  • 38.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 120.00
  • 145.00
Girlfriend Collective High-Rise Compressive Leggings - Outerworn
Outerknown
Girlfriend Collective High-Rise Compressive Leggings - Outerworn
  • 55.00
  • 68.00
Apex Hybrid Trunks By Kelly Slater - Outerworn
Outerknown
Apex Hybrid Trunks By Kelly Slater - Outerworn
  • 115.00
  • 128.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 46.40
  • 58.00
APEX Evolution Trunk by Kelly Slater 17"
Outerknown
APEX Evolution Trunk by Kelly Slater 17"
  • 101.00
  • 168.00
Tasty Scallop Trunks - Outerworn
Outerknown
Tasty Scallop Trunks - Outerworn
  • 74.00
  • 128.00
Apex Hybrid Trunks by Kelly Slater - Outerworn
Outerknown
Apex Hybrid Trunks by Kelly Slater - Outerworn
  • 77.50
  • 128.00
APEX Evolution Trunk by Kelly Slater 17" - Outerworn
Outerknown
APEX Evolution Trunk by Kelly Slater 17" - Outerworn
  • 145.00
  • 168.00
Strappy Sports Bra
Groceries Apparel
Strappy Sports Bra
  • 51.00
  • 68.00
SALE Knickey Keyhole Bralette in Cacao
Knickey
SALE Knickey Keyhole Bralette in Cacao
  • 15.00
  • 48.00
Organic Comfort Triangle Bralette
Mate
Organic Comfort Triangle Bralette
  • 35.00
  • 44.00

Filter By

Bras (169)
Leggings (158)
Lingerie (9)
Thongs (35)
Baby (7)
Kids (40)
Men (58)
Unisex (5)
Women (565)
Underwear (675)
All
Bamboo (4)
Cotton (87)
Hemp (1)
Lyocell-Tencel (2)
Organic-Cotton (200)
Other (266)
Silk (9)
Sustainable-Synthetic (103)
Wool (3)
Abysse (17)
Agolde (21)
Another Tomorrow (5)
Brook There (27)
Christy Dawn (29)
Cotopaxi (2)
Crann (3)
Cuyana (4)
Duckworth (4)
Emerson Fry (1)
Everlane (124)
Fair Indigo (5)
Figge (5)
Galamaar (121)
Girlfriend Collective (169)
Go Gently Nation (21)
Groceries Apparel (15)
Happy Earth (35)
Harvest And Mill (4)
Harvest & Mill (4)
Hello Jackalo (1)
Janji (10)
Jungmaven (12)
Kent (33)
Knickey (181)
Known Supply (33)
Loop Swim (7)
Loup Charmant (49)
Lovetrust (1)
Mara Hoffman (1)
Mate (48)
Miakoda (1)
Mightly (132)
Namuk (7)
Nui (11)
Nu Swim (5)
Ode (76)
Outerknown (48)
Ozma (12)
Pansy (28)
Printfresh (24)
Re/Done (5)
Reformation (1)
Reprise (11)
Seek Collective (1)
Soor Ploom (17)
Subset (180)
Taylor Stitch (17)
Ten Tree (89)
This Is J (6)
Threads 4 Thought (111)
Toad And Co (2)
Tonle (7)
United By Blue (22)
Vitamin A (46)
Wama Underwear (14)
Wayre (5)
We-Ar4 (1)
Whimsy And Row (2)
Winter Water Factory (166)
Yala (9)
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