Material Myths

Is Tencel better than recycled polyester for activewear?

For health-conscious consumers, Tencel is the superior choice over recycled polyester for activewear. Tencel is made from sustainably harvested wood pulp using a closed-loop solvent process that recovers over 99% of chemicals. The finished fiber is naturally moisture-wicking, temperature-regulating, and silky smooth against skin. It contains no plastic, no PFAS, and no antimicrobial chemical treatments.

Recycled polyester, while diverting plastic waste, sheds 55% more microfibers than virgin polyester due to structurally weaker filaments. It may contain BTEX compounds from the recycling process and still requires chemical treatments for odor control and moisture management. Every wash of a recycled polyester workout top releases plastic particles into your water supply.

Tencel activewear from brands like Tripulse and Reprise Activewear proves that you do not need any form of plastic to achieve high-performance workout clothing. These garments manage sweat, stretch comfortably, and resist odor through fiber properties alone. ONDU champions Tencel activewear because it delivers performance without the health and environmental costs of recycled plastic.

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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.