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

384 Products | Page 1 of 8 | On Sale Selected

Page 1 of 8 | 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
  • 110.00
  • 145.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 34.80
  • 58.00
InMotion 7/8 High Rise Legging
Ten Tree
InMotion 7/8 High Rise Legging
  • 40.80
  • 68.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 23.20
  • 58.00
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
Outerknown
APEX Evolution Trunk by Kelly Slater 17" - FINAL SALE
  • 84.00
  • 168.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 23.20
  • 58.00
InMotion Double Scoop Bra
Ten Tree
InMotion Double Scoop Bra
  • 23.20
  • 58.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 80.00
  • 145.00
APEX Trunks by Kelly Slater 17" - FINAL SALE
Outerknown
APEX Trunks by Kelly Slater 17" - FINAL SALE
  • 73.00
  • 145.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 70.00
  • 145.00
Granville Legging
Ten Tree
Granville Legging
  • 40.80
  • 68.00
Granville Legging
Ten Tree
Granville Legging
  • 27.20
  • 68.00
Granville Legging
Ten Tree
Granville Legging
  • 40.80
  • 68.00
Girlfriend Collective High-Rise Compressive Leggings - Outerworn
Outerknown
Girlfriend Collective High-Rise Compressive Leggings - Outerworn
  • 55.00
  • 68.00
Dobby Modern Scallop Trunks - Outerworn
Outerknown
Dobby Modern Scallop Trunks - Outerworn
  • 35.00
  • 68.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 48.00
  • 145.00
InMotion Mesh Insert Bra Top
Ten Tree
InMotion Mesh Insert Bra Top
  • 20.00
  • 50.00
Apex Trunks by Kelly Slater - Outerworn
Outerknown
Apex Trunks by Kelly Slater - Outerworn
  • 110.00
  • 145.00
InMotion Double Scoop Bra
Ten Tree
InMotion Double Scoop Bra
  • 23.20
  • 58.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 70.00
  • 145.00
APEX Trunks by Kelly Slater - Outerworn
Outerknown
APEX Trunks by Kelly Slater - Outerworn
  • 118.00
  • 145.00
Alta Legging
Ten Tree
Alta Legging
  • 36.00
  • 40.00
inMotion Mesh Insert Legging
Ten Tree
inMotion Mesh Insert Legging
  • 31.20
  • 78.00
Granville Legging
Ten Tree
Granville Legging
  • 27.20
  • 68.00
Granville Legging
Ten Tree
Granville Legging
  • 27.20
  • 68.00
Nomadic Volley
Outerknown
Nomadic Volley
  • 39.00
  • 78.00
InMotion 7/8 Pocket Legging
Ten Tree
InMotion 7/8 Pocket Legging
  • 46.80
  • 78.00
Scoop Neck Longsleeve Bodysuit
Ten Tree
Scoop Neck Longsleeve Bodysuit
  • 34.80
  • 58.00
APEX Evolution Trunk by Kelly Slater
Outerknown
APEX Evolution Trunk by Kelly Slater
  • 84.00
  • 168.00
The Everyday Bra
Ten Tree
The Everyday Bra
  • 31.50
  • 45.00
Granville Legging
Ten Tree
Granville Legging
  • 40.80
  • 68.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 34.80
  • 58.00
Granville Legging
Ten Tree
Granville Legging
  • 27.20
  • 68.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 23.20
  • 58.00
Sova Merino leggings
Namuk
Sova Merino leggings
  • 39.00
  • 49.00
InMotion 7/8 Pocket Legging
Ten Tree
InMotion 7/8 Pocket Legging
  • 46.80
  • 78.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 29.00
  • 58.00
InMotion 7/8 Pocket Legging
Ten Tree
InMotion 7/8 Pocket Legging
  • 46.80
  • 78.00
Granville Legging
Ten Tree
Granville Legging
  • 40.80
  • 68.00
The Everyday Thong
Ten Tree
The Everyday Thong
  • 12.00
  • 20.00
Mens Boxer
This Is J
Mens Boxer
  • 53.00
  • 59.00
Luxe Fleece Legging
Ten Tree
Luxe Fleece Legging
  • 27.20
  • 68.00
Nomadic Volley
Outerknown
Nomadic Volley
  • 39.00
  • 78.00
Risa Flared Leggings with Pockets
Jungmaven
Risa Flared Leggings with Pockets
  • 39.00
  • 88.00
InMotion Longline Active Bra
Ten Tree
InMotion Longline Active Bra
  • 23.20
  • 58.00
Orosi Pocket Leggings - Mid Rise
Jungmaven
Orosi Pocket Leggings - Mid Rise
  • 39.00
  • 88.00
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
  • 46.00
  • 145.00

Filter By

Bras (99)
Leggings (107)
Lingerie (8)
Thongs (21)
Kids (7)
Men (58)
Unisex (2)
Women (317)
Underwear (384)
All
Bamboo (3)
Cotton (45)
Hemp (5)
Linen (1)
Organic-Cotton (106)
Other (208)
Sustainable-Synthetic (15)
Wool (1)
A Day (1)
Brook There (41)
Christy Dawn (26)
Crann (3)
Cuyana (7)
Duckworth (4)
Emerson Fry (1)
Fair Indigo (5)
Happy Earth (8)
Harvest And Mill (4)
Hello Jackalo (1)
Janji (9)
Jungmaven (14)
Kent (36)
Knickey (179)
Mara Hoffman (1)
Mate (43)
Miakoda (4)
Namuk (7)
Ode (70)
Outerknown (47)
Seek Collective (1)
Ten Tree (87)
The Good Tee (1)
This Is J (6)
Threads 4 Thought (136)
Toad And Co (2)
Tonle (6)
Vitamin A (46)
Vuori (50)
Wama Underwear (14)
Yala (7)
Canada (23)
United States (361)
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