Where are you browsing from today?

USA flag

US
EU / UK

Ethical Clothing
USA flag

Sustainable Cotton Underwear

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

1012 Products | Page 1 of 22

Page 1 of 22

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Scoop Neck Longsleeve Bodysuit
Ten Tree
Scoop Neck Longsleeve Bodysuit
  • 58.00
Organic Cotton High Rise Legging
Ten Tree
Organic Cotton High Rise Legging
  • 18.00
  • 30.00
Organic Cotton Legging
Ten Tree
Organic Cotton Legging
  • 30.00
Mesh Bralette
Jungmaven
Mesh Bralette
  • 44.00
Pre-Loved Organic Pima Cotton Wrap Front Bodysuit ♻️
Hello Jackalo
Pre-Loved Organic Pima Cotton Wrap Front Bodysuit ♻️
  • 12.00
  • 38.00
All Time Scallop Trunks
Outerknown
All Time Scallop Trunks
  • 39.00
  • 98.00
Alta Legging
Ten Tree
Alta Legging
  • 40.00
Tasty Scallop Trunks - Outerworn
Outerknown
Tasty Scallop Trunks - Outerworn
  • 74.00
  • 128.00
New Without Tags Leggings size: 2-5T
Mightly
New Without Tags Leggings size: 2-5T
  • 16.00
ORIGINAL BRA — PANSY
Pansy
ORIGINAL BRA — PANSY
  • 28.00
Strappy Sports Bra
Groceries Apparel
Strappy Sports Bra
  • 51.00
  • 68.00
Leggings - High Seas Navy
Winter Water Factory
Leggings - High Seas Navy
  • 32.00
Organic Cotton Mid-Rise Hipster in Carbon
Subset
Organic Cotton Mid-Rise Hipster in Carbon
  • 20.00
Organic Cotton Scoop Bralette in Carbon
Knickey
Organic Cotton Scoop Bralette in Carbon
  • 24.00
  • 48.00
White Triangle Bra
Brook There
White Triangle Bra
  • 46.00
  • 64.00
The Mel Panty | Rose
Christy Dawn
The Mel Panty | Rose
  • 48.00
Leggings - Foxes & Hedgehogs Night Sky
Winter Water Factory
Leggings - Foxes & Hedgehogs Night Sky
  • 25.60
  • 32.00
Leggings - Space Charcoal
Winter Water Factory
Leggings - Space Charcoal
  • 22.40
  • 32.00
Organic Cotton Reinforced Knee Legging 2-Pack - FINAL SALE
Mightly
Organic Cotton Reinforced Knee Legging 2-Pack - FINAL SALE
  • 15.95
  • 39.90
The Long-Sleeve Supima® Square-Neck Bodysuit | Black | Bikini
Everlane
The Long-Sleeve Supima® Square-Neck Bodysuit | Black | Bikini
  • 14.00
  • 45.00
Organic Cotton Mid-Rise Thong in Stone
Knickey
Organic Cotton Mid-Rise Thong in Stone
  • 20.00
The Seamless Legging | Burnt Sugar
Everlane
The Seamless Legging | Burnt Sugar
  • 15.00
  • 58.00
Baby Leggings - Sunflowers Green
Winter Water Factory
Baby Leggings - Sunflowers Green
  • 28.00
Vintage 80s Cotton Bralette - #1608
Re/Done
Vintage 80s Cotton Bralette - #1608
  • 165.00
New Without Tags Leggings size: 6-14 Years
Mightly
New Without Tags Leggings size: 6-14 Years
  • 12.00
Midnight Triangle Bra
Brook There
Midnight Triangle Bra
  • 46.00
  • 64.00
The Form Square-Neck Bodysuit | Deep Taupe
Everlane
The Form Square-Neck Bodysuit | Deep Taupe
  • 17.00
  • 58.00
Longline Bralette - Black
Known Supply
Longline Bralette - Black
  • 28.00
Signature Bloomer in Black
Loup Charmant
Signature Bloomer in Black
  • 60.00
Organic Cotton Tank Bralette in Wheat
Knickey
Organic Cotton Tank Bralette in Wheat
  • 15.00
  • 48.00
Organic Cotton Keyhole Soft Bra in Aurora
Knickey
Organic Cotton Keyhole Soft Bra in Aurora
  • 31.00
  • 62.00
The Molly Thong Bundle | Natural
Christy Dawn
The Molly Thong Bundle | Natural
  • 144.00
Organic Cotton High-Rise Brief in Cloud Nine
Knickey
Organic Cotton High-Rise Brief in Cloud Nine
  • 10.00
  • 20.00
Matching Slip
Loup Charmant
Matching Slip
  • 170.00
Organic Cotton High-Rise Brief Mystery 3-Pack
Knickey
Organic Cotton High-Rise Brief Mystery 3-Pack
  • 20.00
  • 60.00
The Supima® Boxer Brief | Uniform | Heather Charcoal
Everlane
The Supima® Boxer Brief | Uniform | Heather Charcoal
  • 28.00
High Rise Thong - Black
Known Supply
High Rise Thong - Black
  • 18.00
Organic Cotton Triangle Soft Bra in Stone
Subset
Organic Cotton Triangle Soft Bra in Stone
  • 62.00
Organic Cotton Mid-Rise Hipster in Cloud Nine
Subset
Organic Cotton Mid-Rise Hipster in Cloud Nine
  • 15.00
  • 20.00
Organic Cotton Maternity Below-Belly Brief in Carbon
Subset
Organic Cotton Maternity Below-Belly Brief in Carbon
  • 25.00
Organic Cotton Mid-Rise Hipster in Aurora
Knickey
Organic Cotton Mid-Rise Hipster in Aurora
  • 10.00
  • 20.00
The Cutaway Tank Bodysuit | Black | Thong
Everlane
The Cutaway Tank Bodysuit | Black | Thong
  • 14.00
  • 48.00
Mini Slip in Swiss Ellipse
Loup Charmant
Mini Slip in Swiss Ellipse
  • 160.00
Organic Cotton Triangle Soft Bra in Carbon
Knickey
Organic Cotton Triangle Soft Bra in Carbon
  • 62.00
The Long-Sleeve Supima® Square-Neck Bodysuit | Lapis Blue | Thong
Everlane
The Long-Sleeve Supima® Square-Neck Bodysuit | Lapis Blue | Thong
  • 23.00
  • 45.00
Organic Cotton Low-Rise Thong in Cacao
Knickey
Organic Cotton Low-Rise Thong in Cacao
  • 20.00
Organic Cotton Mid-Rise Shortie in Spice
Subset
Organic Cotton Mid-Rise Shortie in Spice
  • 20.00
The Seamless Bra | Black
Everlane
The Seamless Bra | Black
  • 14.00
  • 35.00

Filter By

Boxer-shorts (2)
Bras (91)
Leggings (81)
Lingerie (8)
Thongs (44)
Baby (23)
Kids (61)
Men (26)
Unisex (2)
Women (243)
Underwear (355)
All
Cotton (82)
Organic-Cotton (273)
All
Vitamin A (4)
Re/Done (1)
Knickey (156)
Pansy (29)
Yala (2)
Crann (3)
Everlane (69)
Printfresh (26)
Tonle (6)
Harvest & Mill (4)
Mate (30)
Winter Water Factory (130)
Lovetrust (1)
Nu Swim (2)
Loup Charmant (34)
Taylor Stitch (4)
Christy Dawn (29)
United By Blue (4)
Kent (22)
Mara Hoffman (1)
Groceries Apparel (13)
Figge (4)
Jungmaven (1)
Harvest And Mill (3)
Hello Jackalo (1)
Outerknown (2)
Ten Tree (4)
Subset (157)
Agolde (2)
Ode (60)
Soor Ploom (14)
Another Tomorrow (2)
Wama Underwear (1)
Brook There (53)
Fair Indigo (3)
Known Supply (33)
Go Gently Nation (20)
Mightly (63)
Happy Earth (19)
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