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

355 Products | Page 3 of 8 | On Sale Selected

Page 3 of 8 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Men's Trio - 3 Organic Cotton Breather Briefs
Kent
Men's Trio - 3 Organic Cotton Breather Briefs
  • 97.00
  • 102.00
Bloomers - Axolotls Surf Blue
Winter Water Factory
Bloomers - Axolotls Surf Blue
  • 20.30
  • 29.00
Organic Cotton High-Rise Brief in Petal
Knickey
Organic Cotton High-Rise Brief in Petal
  • 10.00
  • 20.00
Organic Cotton High-Rise Brief in Petal
Subset
Organic Cotton High-Rise Brief in Petal
  • 10.00
  • 20.00
Organic Cotton Scoop Bralette in Cacao
Knickey
Organic Cotton Scoop Bralette in Cacao
  • 24.00
  • 48.00
Hipster - Lilac
Ode
Hipster - Lilac
  • 27.10
  • 44.60
Organic Cotton Low-Rise Thong in Cloud Nine
Subset
Organic Cotton Low-Rise Thong in Cloud Nine
  • 10.00
  • 20.00
Organic Cotton Top Drawer Swap in Carbon
Subset
Organic Cotton Top Drawer Swap in Carbon
  • 200.00
  • 224.00
Organic Cotton Tank Bralette in Cacao
Subset
Organic Cotton Tank Bralette in Cacao
  • 15.00
  • 48.00
Baby Leggings - Space Charcoal
Winter Water Factory
Baby Leggings - Space Charcoal
  • 19.60
  • 28.00
Organic Cotton Mid-Rise Shortie in Petal
Knickey
Organic Cotton Mid-Rise Shortie in Petal
  • 10.00
  • 20.00
Organic Cotton High-Rise Brief in Lunar
Knickey
Organic Cotton High-Rise Brief in Lunar
  • 10.00
  • 20.00
Leggings - Dreaming Tigers Green
Winter Water Factory
Leggings - Dreaming Tigers Green
  • 25.60
  • 32.00
Organic Cotton Top Drawer Swap in Carbon
Knickey
Organic Cotton Top Drawer Swap in Carbon
  • 200.00
  • 224.00
The Long-Sleeve Supima® Square-Neck Bodysuit | Tawny Brown | Thong
Everlane
The Long-Sleeve Supima® Square-Neck Bodysuit | Tawny Brown | Thong
  • 25.00
  • 45.00
Baby Leggings - Foxes Pale Blue
Winter Water Factory
Baby Leggings - Foxes Pale Blue
  • 14.00
  • 28.00
Organic Cotton Tank Bralette in Peach
Knickey
Organic Cotton Tank Bralette in Peach
  • 15.00
  • 48.00
Guac On & Fresh Margarita - Boyfriend Boxer - Lava Rock
Printfresh
Guac On & Fresh Margarita - Boyfriend Boxer - Lava Rock
  • 28.00
  • 48.00
Organic Cotton Low-Rise Brief in Gale
Subset
Organic Cotton Low-Rise Brief in Gale
  • 15.00
  • 20.00
The Cotton Thong | Dark Sage
Everlane
The Cotton Thong | Dark Sage
  • 5.00
  • 15.00
Men's Boxer Trio - Cloud/Charcoal/Gray
Kent
Men's Boxer Trio - Cloud/Charcoal/Gray
  • 97.00
  • 102.00
Wheat Triangle Bra
Brook There
Wheat Triangle Bra
  • 46.00
  • 64.00
Front Seam Legging
Groceries Apparel
Front Seam Legging
  • 81.00
  • 108.00
Organic Cotton Tank Bralette in Carbon
Subset
Organic Cotton Tank Bralette in Carbon
  • 15.00
  • 48.00
Organic Cotton Tank Bralette in Peach
Subset
Organic Cotton Tank Bralette in Peach
  • 15.00
  • 48.00
Organic Cotton High-Rise Thong in Cloud Nine
Knickey
Organic Cotton High-Rise Thong in Cloud Nine
  • 10.00
  • 20.00
The Supima® Longer Boxer Brief | Uniform | Heathered Grey
Everlane
The Supima® Longer Boxer Brief | Uniform | Heathered Grey
  • 8.00
  • 28.00
The Bayberry Trunk in Mirage Palm
Taylor Stitch
The Bayberry Trunk in Mirage Palm
  • 50.40
  • 72.00
Organic Cotton Keyhole Soft Bra in Meridian
Subset
Organic Cotton Keyhole Soft Bra in Meridian
  • 31.00
  • 62.00
The Cotton High-Rise Hipster | Dark Sage
Everlane
The Cotton High-Rise Hipster | Dark Sage
  • 8.00
  • 15.00
Leggings - Trees Dark Green
Winter Water Factory
Leggings - Trees Dark Green
  • 25.60
  • 32.00
SET Simplicité & Hipster - Soft Rose
Ode
SET Simplicité & Hipster - Soft Rose
  • 68.90
  • 107.20
The Cutaway Tank Bodysuit | White | Bikini
Everlane
The Cutaway Tank Bodysuit | White | Bikini
  • 12.00
  • 48.00
Rose Quartz Triangle Bra
Brook There
Rose Quartz Triangle Bra
  • 46.00
  • 64.00
Organic Cotton Tank Bralette
Knickey
Organic Cotton Tank Bralette
  • 15.00
  • 48.00
Baby Leggings - Submarines Blue & Orange
Winter Water Factory
Baby Leggings - Submarines Blue & Orange
  • 22.40
  • 28.00
The Cotton Tank Bra | Burnt Sugar
Everlane
The Cotton Tank Bra | Burnt Sugar
  • 11.00
  • 28.00
Bikini Trio ~ 3 Organic Cotton Underwear
Kent
Bikini Trio ~ 3 Organic Cotton Underwear
  • 80.00
  • 84.00
Organic Cotton High-Rise Brief in Lunar
Subset
Organic Cotton High-Rise Brief in Lunar
  • 10.00
  • 20.00
Organic Cotton Tank Bralette in Cacao
Knickey
Organic Cotton Tank Bralette in Cacao
  • 15.00
  • 48.00
High-Waist Trio ~ 3 Organic Cotton Underwear
Kent
High-Waist Trio ~ 3 Organic Cotton Underwear
  • 80.00
  • 84.00
Cross-Front Pull-Over Nursing & Maternity Bralette - Solids - FINAL SALE
Mightly
Cross-Front Pull-Over Nursing & Maternity Bralette - Solids - FINAL SALE
  • 17.50
  • 35.00
Leggings - Double Decker Buses Red
Winter Water Factory
Leggings - Double Decker Buses Red
  • 22.40
  • 32.00
Naomi High-Waist Legging
Groceries Apparel
Naomi High-Waist Legging
  • 73.50
  • 98.00
Organic Cotton Low-Rise Thong Mystery 3-Pack
Subset
Organic Cotton Low-Rise Thong Mystery 3-Pack
  • 20.00
  • 60.00
Organic Cotton Scoop Bralette in Cacao
Subset
Organic Cotton Scoop Bralette in Cacao
  • 24.00
  • 48.00
High-Waist Capri Legging 17"
Groceries Apparel
High-Waist Capri Legging 17"
  • 66.00
  • 88.00
Organic Cotton High-Rise Thong in Petal
Subset
Organic Cotton High-Rise Thong in Petal
  • 10.00
  • 20.00

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