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 4 of 6 | On Sale Selected

Page 4 of 6 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
The Cotton Bralette | Black
Everlane
The Cotton Bralette | Black
  • 11.00
  • 28.00
Organic Cotton Tank Bralette in Lunar
Knickey
Organic Cotton Tank Bralette in Lunar
  • 15.00
  • 48.00
Organic Cotton Scoop Bralette in Peach
Subset
Organic Cotton Scoop Bralette in Peach
  • 24.00
  • 48.00
Organic Cotton Mid-Rise Shortie in Petal
Subset
Organic Cotton Mid-Rise Shortie in Petal
  • 10.00
  • 20.00
Organic Comfort High Waist Brief 3 Pack
Mate
Organic Comfort High Waist Brief 3 Pack
  • 67.00
  • 84.00
The Cotton Tank Bra | Dark Sage
Everlane
The Cotton Tank Bra | Dark Sage
  • 14.00
  • 28.00
Organic Cotton High-Rise Thong Mystery 3-Pack
Subset
Organic Cotton High-Rise Thong Mystery 3-Pack
  • 20.00
  • 60.00
Organic Cotton Tank Bralette in Peach
Knickey
Organic Cotton Tank Bralette in Peach
  • 15.00
  • 48.00
Organic Supima Cotton High-Waist Brief in Blossom Pink
Kent
Organic Supima Cotton High-Waist Brief in Blossom Pink
  • 17.00
  • 28.00
The Cotton Tank Bra | Heathered Grey
Everlane
The Cotton Tank Bra | Heathered Grey
  • 7.00
  • 28.00
Organic Cotton Women's Underwear Starter Set
Knickey
Organic Cotton Women's Underwear Starter Set
  • 85.00
  • 100.00
The Cotton Hipster | Dark Sage
Everlane
The Cotton Hipster | Dark Sage
  • 8.00
  • 15.00
Herringbone Tights
Soor Ploom
Herringbone Tights
  • 22.00
  • 38.00
EcoKnit™ Ribbed Leggings
United By Blue
EcoKnit™ Ribbed Leggings
  • 17.00
  • 68.00
Baby Leggings - Moles Blue
Winter Water Factory
Baby Leggings - Moles Blue
  • 19.60
  • 28.00
Organic Cotton Women's Underwear Starter Set
Subset
Organic Cotton Women's Underwear Starter Set
  • 85.00
  • 100.00
Organic Cotton Tank Bralette in Carbon
Knickey
Organic Cotton Tank Bralette in Carbon
  • 15.00
  • 48.00
Organic Cotton High-Rise Brief in Aurora
Knickey
Organic Cotton High-Rise Brief in Aurora
  • 10.00
  • 20.00
Organic Cotton Reinforced Knee Legging 2-Pack: FINAL SALE
Mightly
Organic Cotton Reinforced Knee Legging 2-Pack: FINAL SALE
  • 19.95
  • 39.90
Girls' Organic Cotton Marigold Leggings
Crann
Girls' Organic Cotton Marigold Leggings
  • 21.00
  • 28.00
Kids Trunk Underwear 3 Pack - FINAL SALE
Mightly
Kids Trunk Underwear 3 Pack - FINAL SALE
  • 17.50
  • 28.95
Simplicité Bralette - Lilac
Ode
Simplicité Bralette - Lilac
  • 48.00
  • 68.90
Organic Cotton Tank Bralette in Lunar
Subset
Organic Cotton Tank Bralette in Lunar
  • 15.00
  • 48.00
Organic Cotton Women's Evolve Underwear 3-Pack - FINAL SALE
Mightly
Organic Cotton Women's Evolve Underwear 3-Pack - FINAL SALE
  • 15.00
  • 30.00
Organic Cotton Low-Rise Thong in Lunar
Knickey
Organic Cotton Low-Rise Thong in Lunar
  • 10.00
  • 20.00
The Long-Sleeve Supima® Square-Neck Bodysuit | Black | Bikini
Everlane
The Long-Sleeve Supima® Square-Neck Bodysuit | Black | Bikini
  • 14.00
  • 45.00
Semi-Sheer Scoop Soft Bra in Blossom Pink
Kent
Semi-Sheer Scoop Soft Bra in Blossom Pink
  • 40.00
  • 58.00
Organic Cotton Mid-Rise Brief in Cloud Nine
Subset
Organic Cotton Mid-Rise Brief in Cloud Nine
  • 10.00
  • 20.00
Organic Cotton Tank Bralette in Spice
Knickey
Organic Cotton Tank Bralette in Spice
  • 15.00
  • 48.00
Hipster - Dahlia Champagne
Ode
Hipster - Dahlia Champagne
  • 27.10
  • 44.60
Organic Cotton Mid-Rise Brief in Lunar
Subset
Organic Cotton Mid-Rise Brief in Lunar
  • 10.00
  • 20.00
Baby Leggings - Trees Green & Orange
Winter Water Factory
Baby Leggings - Trees Green & Orange
  • 19.60
  • 28.00
The Seamless Legging | Acorn
Everlane
The Seamless Legging | Acorn
  • 15.00
  • 58.00
Mini-Flared Legging
Groceries Apparel
Mini-Flared Legging
  • 88.50
  • 118.00
Stretch Legging
Soor Ploom
Stretch Legging
  • 37.00
  • 62.00
Men's 'Breather' Brief in Blossom Pink
Kent
Men's 'Breather' Brief in Blossom Pink
  • 20.00
  • 34.00
Organic Cotton Mid-Rise Brief in Cloud Nine
Knickey
Organic Cotton Mid-Rise Brief in Cloud Nine
  • 10.00
  • 20.00
The Seamless Legging | Dusty Lavender
Everlane
The Seamless Legging | Dusty Lavender
  • 12.00
  • 58.00
Organic Cotton Women's Underwear Starter Set in Carbon
Knickey
Organic Cotton Women's Underwear Starter Set in Carbon
  • 85.00
  • 100.00
Organic Cotton Reinforced Knee Legging - FINAL SALE
Mightly
Organic Cotton Reinforced Knee Legging - FINAL SALE
  • 12.95
  • 18.95
Organic Comfort Scoop Bralette
Mate
Organic Comfort Scoop Bralette
  • 35.00
  • 44.00
Naomi High-Waist Legging
Groceries Apparel
Naomi High-Waist Legging
  • 73.50
  • 98.00
Baby Leggings - Trees Navy & Green
Winter Water Factory
Baby Leggings - Trees Navy & Green
  • 19.60
  • 28.00
Organic Cotton High-Rise Thong in Petal
Knickey
Organic Cotton High-Rise Thong in Petal
  • 10.00
  • 20.00
Thong Bodysuit
Groceries Apparel
Thong Bodysuit
  • 73.50
  • 98.00
The Supima® Boxer | Uniform | Kalamata
Everlane
The Supima® Boxer | Uniform | Kalamata
  • 14.00
  • 24.00
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
Stretch Legging
Soor Ploom
Stretch Legging
  • 51.00
  • 64.00

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