Danish leather footwear manufacturer Ecco has released a limited-edition BIOM 720 shoe incorporating a protein-based fibre made from leather by-products, developed with Spinnova.

The collaboration, which began in 2020, focuses on converting residual leather materials into textile fibres. Wet blue shavings are processed using a mechanical refining method to produce continuous filaments that can be cut into textile-grade fibres, without chemical dissolution.

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