Where are you browsing from today?

USA flag

US
EU / UK

Ethical Clothing
USA flag

Sustainable Organic-Cotton Underwear

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

203 Products | Page 1 of 5 | On Sale Selected

Page 1 of 5 | On Sale Selected

Sort By:

Commissions may be paid to Ethical Clothing when purchasing items with our partner brands.
Organic Cotton High Rise Legging
Ten Tree
Organic Cotton High Rise Legging
  • 24.00
  • 30.00
Tasty Scallop Trunks - Outerworn
Outerknown
Tasty Scallop Trunks - Outerworn
  • 74.00
  • 128.00
All Time Scallop Trunks
Outerknown
All Time Scallop Trunks
  • 39.00
  • 98.00
Organic Cotton Scoop Bralette in Wheat
Subset
Organic Cotton Scoop Bralette in Wheat
  • 24.00
  • 48.00
Pax Legging
Groceries Apparel
Pax Legging
  • 73.50
  • 98.00
Organic Cotton Women's Underwear Starter Set
Knickey
Organic Cotton Women's Underwear Starter Set
  • 85.00
  • 100.00
Organic Cotton High-Rise Thong in Petal
Subset
Organic Cotton High-Rise Thong in Petal
  • 10.00
  • 20.00
Organic Cotton Keyhole Soft Bra in Garnet
Knickey
Organic Cotton Keyhole Soft Bra in Garnet
  • 31.00
  • 62.00
Organic Cotton Mid-Rise Shortie in Meridian
Knickey
Organic Cotton Mid-Rise Shortie in Meridian
  • 10.00
  • 20.00
Organic Cotton Scoop Bralette in Cloud Nine
Subset
Organic Cotton Scoop Bralette in Cloud Nine
  • 24.00
  • 48.00
Organic Cotton Low-Rise Thong in Petal
Knickey
Organic Cotton Low-Rise Thong in Petal
  • 10.00
  • 20.00
Organic Cotton Top Drawer Swap
Subset
Organic Cotton Top Drawer Swap
  • 200.00
  • 224.00
Momo Midi Legging 19"
Groceries Apparel
Momo Midi Legging 19"
  • 73.50
  • 98.00
Organic Cotton Triangle Soft Bra in Meridian
Knickey
Organic Cotton Triangle Soft Bra in Meridian
  • 31.00
  • 62.00
Leggings - Corals Blue
Winter Water Factory
Leggings - Corals Blue
  • 22.40
  • 32.00
Organic Cotton Top Drawer Swap in Carbon
Subset
Organic Cotton Top Drawer Swap in Carbon
  • 297.00
  • 322.00
EcoKnit™ Ribbed Leggings
United By Blue
EcoKnit™ Ribbed Leggings
  • 17.00
  • 68.00
Baby Leggings - Moles Blue
Winter Water Factory
Baby Leggings - Moles Blue
  • 16.80
  • 28.00
Organic Cotton Long Sleeve Bodysuit - Geometric Moon
Tonle
Organic Cotton Long Sleeve Bodysuit - Geometric Moon
  • 14.00
  • 24.00
Organic Cotton Mid-Rise Shortie in Petal
Subset
Organic Cotton Mid-Rise Shortie in Petal
  • 10.00
  • 20.00
Kids' Organic Cotton Purple Leggings
Crann
Kids' Organic Cotton Purple Leggings
  • 21.00
  • 28.00
Organic Cotton Keyhole Soft Bra in Garnet
Subset
Organic Cotton Keyhole Soft Bra in Garnet
  • 31.00
  • 62.00
Kids Organic Cotton Cropped Leggings 2 Pack - FINAL SALE
Mightly
Kids Organic Cotton Cropped Leggings 2 Pack - FINAL SALE
  • 11.95
  • 29.95
Organic Cotton Women's Underwear Starter Set in Quartz
Subset
Organic Cotton Women's Underwear Starter Set in Quartz
  • 85.00
  • 100.00
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 Tank Bralette in Carbon
Subset
Organic Cotton Tank Bralette in Carbon
  • 15.00
  • 48.00
Baby Leggings - Submarines Blue & Orange
Winter Water Factory
Baby Leggings - Submarines Blue & Orange
  • 19.60
  • 28.00
Organic Cotton Mother's Day Gift Set in Quartz
Subset
Organic Cotton Mother's Day Gift Set in Quartz
  • 297.00
  • 322.00
Organic Cotton Mid-Rise Hipster in Aurora
Subset
Organic Cotton Mid-Rise Hipster in Aurora
  • 10.00
  • 20.00
Organic Cotton Scoop Bralette in Lunar
Knickey
Organic Cotton Scoop Bralette in Lunar
  • 24.00
  • 48.00
Organic Cotton Scoop Bralette in Wheat
Knickey
Organic Cotton Scoop Bralette in Wheat
  • 24.00
  • 48.00
Organic Cotton Scoop Bralette in Carbon
Knickey
Organic Cotton Scoop Bralette in Carbon
  • 24.00
  • 48.00
Organic Cotton Mid-Rise Brief in Lunar
Knickey
Organic Cotton Mid-Rise Brief in Lunar
  • 10.00
  • 20.00
Organic Cotton Low-Rise Thong Mystery 3-Pack
Knickey
Organic Cotton Low-Rise Thong Mystery 3-Pack
  • 20.00
  • 60.00
Organic Cotton Mid-Rise Brief Mystery 3-Pack
Knickey
Organic Cotton Mid-Rise Brief Mystery 3-Pack
  • 20.00
  • 60.00
Organic Cotton Low-Rise Thong in Lunar
Knickey
Organic Cotton Low-Rise Thong in Lunar
  • 10.00
  • 20.00
Men's Trio - 3 Organic Cotton Breather Boxers
Kent
Men's Trio - 3 Organic Cotton Breather Boxers
  • 97.00
  • 102.00
Organic Cotton Mother's Day Gift Set in Carbon
Subset
Organic Cotton Mother's Day Gift Set in Carbon
  • 297.00
  • 322.00
Organic Cotton Tank Bralette in Lunar
Knickey
Organic Cotton Tank Bralette in Lunar
  • 15.00
  • 48.00
Baby Leggings - Turtles Green
Winter Water Factory
Baby Leggings - Turtles Green
  • 19.60
  • 28.00
Organic Cotton Tank Bralette
Knickey
Organic Cotton Tank Bralette
  • 15.00
  • 48.00
Organic Cotton Scoop Bralette in Cloud Nine
Knickey
Organic Cotton Scoop Bralette in Cloud Nine
  • 24.00
  • 48.00
Thong Bodysuit
Groceries Apparel
Thong Bodysuit
  • 73.50
  • 98.00
Organic Cotton Mid-Rise Brief in Petal
Subset
Organic Cotton Mid-Rise Brief in Petal
  • 10.00
  • 20.00
Organic Cotton Mid-Rise Brief in Cloud Nine
Knickey
Organic Cotton Mid-Rise Brief in Cloud Nine
  • 10.00
  • 20.00
Bloomers - Turtles Green
Winter Water Factory
Bloomers - Turtles Green
  • 20.30
  • 29.00
Nursing, Maternity & Beyond Bralette in Folk Floral - FINAL SALE
Mightly
Nursing, Maternity & Beyond Bralette in Folk Floral - FINAL SALE
  • 17.50
  • 35.00
Baby Leggings - Axolotls Surf Blue
Winter Water Factory
Baby Leggings - Axolotls Surf Blue
  • 19.60
  • 28.00

Filter By

Bras (60)
Leggings (46)
Thongs (20)
Baby (11)
Kids (33)
Men (9)
Women (150)
Underwear (203)
All
Organic-Cotton (203)
All
Agolde (1)
Another Tomorrow (3)
Brook There (26)
Christy Dawn (3)
Crann (3)
Everlane (8)
Fair Indigo (2)
Go Gently Nation (18)
Groceries Apparel (13)
Happy Earth (35)
Harvest And Mill (4)
Harvest & Mill (4)
Kent (23)
Knickey (159)
Known Supply (33)
Loup Charmant (31)
Mara Hoffman (1)
Mate (48)
Miakoda (1)
Mightly (68)
Namuk (1)
Nu Swim (4)
Ode (35)
Outerknown (2)
Pansy (14)
Printfresh (17)
Subset (161)
Ten Tree (4)
Tonle (6)
United By Blue (7)
Vitamin A (1)
Wama Underwear (7)
Winter Water Factory (164)
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