women's natural fiber tops

Natural fibers come from a plant or an animal rather than from petroleum. For tops that usually means cotton, organic cotton, linen, hemp, silk, or a wood-pulp fiber like TENCEL lyocell. Polyester, nylon, acrylic and elastane are plastics, and a top can be labeled cotton while still being half polyester.

Natural fibers breathe and move moisture away from the skin, so they trap less sweat and heat than a plastic knit. That matters for anyone who overheats, gets contact irritation, or reacts to the finishes and dyes that synthetic fabrics need to hold color.

Toxome reads each garment's fiber composition and scores it on what that fiber does to your body, not on a brand's sustainability marketing. A higher score means a cleaner fiber. Composition is taken from what the brand publishes, so the score reflects the label, not our opinion of it.