About

The Plain Thread is a directory of clothing and home goods made from natural fibers: cotton, linen, wool, hemp, alpaca, silk, cashmere, and more.

Every brand listed here has been reviewed to confirm they use natural or closed-loop processed fibers as their primary materials. Brands that primarily use polyester, nylon, acrylic, or other petroleum-derived synthetics are not included.

How we verify

We review each brand's product materials, certifications (GOTS, OEKO-TEX, ZQ Merino, etc.), and publicly stated fiber policies before listing. We check that the majority of a brand's products use natural or semi-natural closed-loop fibers.

TENCEL Lyocell and TENCEL Modal are included with disclosure. These semi-natural fibers are derived from wood pulp using a closed-loop process that recaptures solvents. They are not petroleum-derived, but they are chemically processed.

Affiliate disclosure

Some links on The Plain Thread are affiliate links. When you click through and make a purchase, we may earn a small commission at no cost to you. Affiliate relationships do not influence which brands are listed or how they are described. We do not list brands solely because of affiliate arrangements.