Shopping Guide

What should I avoid when reading clothing labels?

The biggest red flags on clothing labels are high percentages of polyester, nylon, acrylic, or unspecified synthetic blends. If a garment is 80% or more synthetic, it will behave like plastic against your skin regardless of any natural fiber mixed in. Be wary of vague terms like "performance fabric" or "technical textile" without specific fiber names, as these almost always mean polyester or nylon. Labels that list only care instructions without fiber content may be non-compliant with FTC regulations and should be avoided.

Watch out for greenwashing tactics on labels. Words like "eco," "green," "conscious," or "sustainable" on a tag do not guarantee natural fiber content. A garment labeled "made with organic cotton" might contain only 5% organic cotton and 95% polyester. Always look at the actual percentage breakdown rather than marketing language. Recycled polyester is still polyester and still sheds microplastics with every wash.

At ONDU, we do the label reading for you. Our editorial team examines the full fiber composition of every product before it is listed on our platform. If a garment does not meet our natural-fiber threshold, it does not make it onto the site, no matter how good the brand story sounds.

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Know Your Fabric

Not all “sustainable” fabrics are equal. Here's what actually matters.

Tencel™ Lyocell

Source

Eucalyptus, beechwood, pine trees

Feel

Silky smooth, cool to touch

Why

50% more absorbent than cotton. Biodegradable. Closed-loop production uses 95% less water.

Merino Wool

Source

Merino sheep (look for ethical/mulesing-free farms)

Feel

Soft, lightweight, not itchy

Why

Natural temperature regulation. Antibacterial. Odor resistant. Moisture wicking without plastic.

Organic Cotton

Source

Cotton plants grown without pesticides or synthetic fertilizers

Feel

Soft, breathable, familiar

Why

No toxic residue on skin. GOTS certification ensures clean processing. Best for low-impact activities.

Hemp

Source

Hemp plant (needs minimal water and no pesticides)

Feel

Sturdy, softens with wear

Why

Naturally antibacterial. UV resistant. Gets softer every wash. Most eco-friendly crop on earth.

Alpaca Wool

Source

Alpaca farms (primarily Peru)

Feel

Softer than cashmere, hypoallergenic

Why

No lanolin = hypoallergenic. Thermal regulation. Biodegradable. Low environmental footprint.

Linen

Source

Flax plant

Feel

Cool, crisp, relaxed

Why

Strongest natural fiber. Fully biodegradable. Needs almost no water or pesticides to grow.