Best men's organic cotton underwear brands
Updated November 7, 2026
Most men's underwear is either cotton blended with elastane or synthetic performance fabric. These brands make men's underwear in cotton.
Look for organic cotton, a cotton share of 90% or more, and a soft covered waistband.
The 20 brands below sell men's cotton underwear and are listed in The Plain Thread directory. The green links go straight to their matching shop pages. Some of these brands also sell blends, so check the fiber content on each product.
Compostable organic Supima cotton underwear and basics with minimal packaging.
Women's organic Pima cotton underwear and loungewear in inclusive sizing.
Curated basics in hemp, organic cotton, and linen sourced from responsible producers.
Affordable luxury basics in cashmere, organic cotton, silk, alpaca, and linen for men and women.
Organic cotton basics and casual staples for men and women, grown and sewn entirely in the USA.
Size-inclusive organic cotton underwear and basics for all genders.
Swedish-designed organic cotton underwear, t-shirts, and loungewear basics built for everyday comfort.
100% organic cotton, spandex-free basics and underwear designed for sensitive skin.
Organic cotton underwear, basics, and lingerie for men and women, made under fair conditions in Europe.
Danish organic cotton underwear and basics for men and women.
GOTS-certified organic cotton brand selling basics, underwear, and kids clothing at accessible prices.
Full-range organic brand offering clothing and underwear in organic cotton, linen, hemp, and merino.
Men's activewear and underwear in organic cotton and merino wool.
German cotton socks, boxer shorts, and everyday basics for men and women made with cotton blends.
Organic cotton boxers, socks, loungewear, and basics for men, made from GOTS-certified and recycled materials.
Danish organic cotton basics in a wide range of bold colors for men and women.
UK-made 100% organic cotton basics and activewear for men and women.
Transparent-pricing basics in organic cotton, cashmere, wool, and linen for men and women.
UK surf and outdoor brand making apparel in organic cotton, hemp, and merino.
German family basics in GOTS organic cotton and linen for all ages.
Common questions
Boxers or briefs in cotton?
Both work. Boxer briefs give support with a cotton body, and woven boxers breathe the most.
Does cotton underwear hold its shape?
With around 5% elastane, it does. Pure cotton knits relax over the course of a day.
Why choose cotton over performance underwear?
Cotton breathes and feels soft for daily wear. Synthetic performance fabric dries faster during hard exercise.