Circular Systems has partnered Portugal-based sustainable textiles company Tintex, to launch a premium knits collection. Designed with Texloop RCOT Primo high quality recycled cotton yarns, the collection uses Tintex's Colorau Natural Dyeing Processing, some of the lowest impact materials and processing available on the market.

As per a Knitting Industry report, the collaboration uses breakthrough patented process that replaces synthetic dyes with natural extracts combining with fabric milled with yarns with up to 50 per cent recycled cotton. The Colorau natural dyeing process incorporates compounds of natural origin like plants into substrates to produce functional, ecological, and sustainable technology. The technology also focuses on its environmental impact by eliminating potentially toxic effluents generated by synthetic dyestuffs.

The use of low temperatures in the dyeing process and the substitution of traditional auxiliaries with natural occurring alternatives, also contribute to the impact reduction of the process. Additionally, there is no sacrifice in color durability, as Colorau is focused on natural extracts with inherent color fastness properties that can be also antimicrobial. This unique technology is designed to mimic the beauty and authenticity of nature. The collection will be available in Thyme, Chestnut Tree, Gambier and Morus Tinctoria colors.