Discover how we can help your team select better materials
Material sourcing and treatments often carry hidden social, environmental, and animal welfare risks. We help brands understand what they're using, and what it means.
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Natural stretch relies on fibre properties, mechanical innovation, or fabric construction techniques (such as rib knitting or weaving) to provide elasticity without the use of synthetic fibres. Materials like Coreva™, a stretch denim incorporating natural rubber, demonstrate how innovation can deliver performance.
Partially bio-based fibres, such as Sorona, present improved options compared to petroleum-based elastane but are not fully circular. The most responsible solutions come from 100% natural, biodegradable blends that offer stretch without leaving a lasting environmental impact.

We recommend using certified biodegradable natural stretch options like Coreva™, which combines organic cotton with a natural rubber core to deliver plastic-free, compostable stretch denim. Pairing organic fibres such as cotton, hemp, or bamboo with mechanical methods like rib knitting or weaving can also provide effective elasticity without relying on elastane.
If your team needs support sourcing, talk to us to find out how we can help.

Material sourcing and treatments often carry hidden social, environmental, and animal welfare risks. We help brands understand what they're using, and what it means.

Materials and treatments are at the heart of every product. Bergstrand helps brands navigate these choices through clear guidance, structured tools, and practical workshops that embed sustainability into design and development.
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