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

286 Products | Page 3 of 6 | On Sale Selected

Page 3 of 6 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Organic Cotton Mid-Rise Retro Brief in Wheat
Knickey
Organic Cotton Mid-Rise Retro Brief in Wheat
  • 10.00
  • 20.00
Pima Rib Knit L&L Legging
Lovetrust
Pima Rib Knit L&L Legging
  • 26.00
  • 65.00
Organic Cotton Tank Bralette in Cloud Nine
Knickey
Organic Cotton Tank Bralette in Cloud Nine
  • 15.00
  • 48.00
Organic Cotton Tank Bralette in Cloud Nine
Subset
Organic Cotton Tank Bralette in Cloud Nine
  • 15.00
  • 48.00
Organic Comfort Scoop Bralette
Mate
Organic Comfort Scoop Bralette
  • 35.00
  • 44.00
Organic Comfort Triangle Bralette
Mate
Organic Comfort Triangle Bralette
  • 35.00
  • 44.00
Men's Full Week - 7 Organic Cotton Breather Boxers
Kent
Men's Full Week - 7 Organic Cotton Breather Boxers
  • 204.00
  • 238.00
Nursing, Maternity & Beyond Bralette in Flower Child - FINAL SALE
Mightly
Nursing, Maternity & Beyond Bralette in Flower Child - FINAL SALE
  • 17.50
  • 35.00
FULL CIRCLE Mariana Body Suit
Mara Hoffman
FULL CIRCLE Mariana Body Suit
  • 147.70
  • 225.00
Organic Cotton Mid-Rise Hipster in Aurora
Subset
Organic Cotton Mid-Rise Hipster in Aurora
  • 10.00
  • 20.00
Organic Supima Cotton Hipster in Duck Egg Green
Kent
Organic Supima Cotton Hipster in Duck Egg Green
  • 17.00
  • 28.00
Organic Cotton Triangle Soft Bra in Petal
Knickey
Organic Cotton Triangle Soft Bra in Petal
  • 31.00
  • 62.00
Rose Quartz Triangle Bra
Brook There
Rose Quartz Triangle Bra
  • 46.00
  • 64.00
Organic Cotton High-Rise Brief in Petal
Knickey
Organic Cotton High-Rise Brief in Petal
  • 10.00
  • 20.00
Organic Stretch Pocket Legging
Mate
Organic Stretch Pocket Legging
  • 86.00
  • 108.00
Organic Cotton Triangle Soft Bra in Meridian
Knickey
Organic Cotton Triangle Soft Bra in Meridian
  • 31.00
  • 62.00
Organic Cotton Mid-Rise Shortie in Aurora
Subset
Organic Cotton Mid-Rise Shortie in Aurora
  • 10.00
  • 20.00
Baby Leggings - Solid Plum
Winter Water Factory
Baby Leggings - Solid Plum
  • 19.60
  • 28.00
Organic Cotton Mid-Rise Retro Brief in Meridian
Knickey
Organic Cotton Mid-Rise Retro Brief in Meridian
  • 10.00
  • 20.00
Nursing, Maternity & Beyond Bralette in Botanical Floral - FINAL SALE
Mightly
Nursing, Maternity & Beyond Bralette in Botanical Floral - FINAL SALE
  • 17.50
  • 35.00
Organic Cotton Tank Bralette
Subset
Organic Cotton Tank Bralette
  • 15.00
  • 48.00
Baby Stretch Legging
Soor Ploom
Baby Stretch Legging
  • 38.00
  • 48.00
Organic Cotton Tank Bralette in Carbon
Subset
Organic Cotton Tank Bralette in Carbon
  • 15.00
  • 48.00
Bodysuit - Cassiopée Lace - Gold Sunflower
Ode
Bodysuit - Cassiopée Lace - Gold Sunflower
  • 31.30
  • 103.70
The Cotton Thong | Dark Sage
Everlane
The Cotton Thong | Dark Sage
  • 5.00
  • 15.00
High-Rise Legging w/ Pocket 28"
Groceries Apparel
High-Rise Legging w/ Pocket 28"
  • 88.50
  • 118.00
Classic Underwear Set
Soor Ploom
Classic Underwear Set
  • 49.00
  • 62.00
Organic Cotton Mid-Rise Brief in Aurora
Knickey
Organic Cotton Mid-Rise Brief in Aurora
  • 10.00
  • 20.00
Daily Underwear Set
Soor Ploom
Daily Underwear Set
  • 49.00
  • 62.00
Bikini Trio ~ 3 Organic Cotton Underwear
Kent
Bikini Trio ~ 3 Organic Cotton Underwear
  • 80.00
  • 84.00
Organic Cotton High-Rise Thong in Aurora
Subset
Organic Cotton High-Rise Thong in Aurora
  • 10.00
  • 20.00
Organic Cotton Mid-Rise Thong in Aurora
Subset
Organic Cotton Mid-Rise Thong in Aurora
  • 10.00
  • 20.00
slim leggings | wine
Figge
slim leggings | wine
  • 11.00
  • 35.00
Organic Cotton High-Rise Brief in Petal
Subset
Organic Cotton High-Rise Brief in Petal
  • 10.00
  • 20.00
Men's Full Week - 7 Organic Cotton Breather Briefs
Kent
Men's Full Week - 7 Organic Cotton Breather Briefs
  • 205.00
  • 238.00
Organic Cotton Mid-Rise Brief in Petal
Knickey
Organic Cotton Mid-Rise Brief in Petal
  • 10.00
  • 20.00
Organic Cotton High-Rise Thong in Aurora
Knickey
Organic Cotton High-Rise Thong in Aurora
  • 10.00
  • 20.00
Chocolate Jersey Slip
Brook There
Chocolate Jersey Slip
  • 54.00
  • 68.00
Organic Cotton Triangle Soft Bra in Aurora
Knickey
Organic Cotton Triangle Soft Bra in Aurora
  • 31.00
  • 62.00
The Form Square-Neck Bodysuit | Classic Red
Everlane
The Form Square-Neck Bodysuit | Classic Red
  • 17.00
  • 58.00
Organic Cotton Tank Bralette in Cacao
Subset
Organic Cotton Tank Bralette in Cacao
  • 15.00
  • 48.00
Organic Supima Cotton Triangle Bra
Kent
Organic Supima Cotton Triangle Bra
  • 49.00
  • 68.00
Organic Cotton Low-Rise Thong in Petal
Subset
Organic Cotton Low-Rise Thong in Petal
  • 10.00
  • 20.00
Organic Cotton Scoop Bralette in Carbon
Knickey
Organic Cotton Scoop Bralette in Carbon
  • 24.00
  • 48.00
Organic Cotton Scoop Bralette in Peach
Knickey
Organic Cotton Scoop Bralette in Peach
  • 24.00
  • 48.00
Organic Cotton Triangle Soft Bra in Garnet
Knickey
Organic Cotton Triangle Soft Bra in Garnet
  • 31.00
  • 62.00
Cami Bralette
Groceries Apparel
Cami Bralette
  • 43.50
  • 58.00
Organic Cotton Low-Rise Thong in Lunar
Subset
Organic Cotton Low-Rise Thong in Lunar
  • 10.00
  • 20.00

Filter By

Bras (87)
Leggings (43)
Lingerie (8)
Thongs (30)
Baby (7)
Kids (23)
Men (21)
Unisex (3)
Women (232)
Underwear (286)
All
Cotton (87)
Organic-Cotton (199)
All
Agolde (1)
Another Tomorrow (3)
Brook There (27)
Christy Dawn (29)
Crann (3)
Everlane (60)
Fair Indigo (5)
Figge (4)
Go Gently Nation (20)
Groceries Apparel (13)
Happy Earth (34)
Harvest And Mill (4)
Harvest & Mill (4)
Hello Jackalo (1)
Jungmaven (3)
Kent (33)
Knickey (161)
Known Supply (33)
Loup Charmant (42)
Lovetrust (1)
Mara Hoffman (1)
Mate (48)
Miakoda (1)
Mightly (91)
Namuk (1)
Nu Swim (4)
Ode (60)
Outerknown (2)
Pansy (28)
Printfresh (14)
Re/Done (1)
Soor Ploom (17)
Subset (162)
Taylor Stitch (4)
Ten Tree (4)
Tonle (6)
United By Blue (8)
Vitamin A (1)
Wama Underwear (11)
Winter Water Factory (166)
Yala (2)
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