In the 1960s women affected change by burning their bras. Nowadays, keeping your bra on will have you championing a cause, especially if it is as well contoured and as supportive as the new sports styles from the London based activewear designer, Charli Cohen. The ethos of her synonymous brand has been built around sustainability, with 70% of the fabrics created using recycled ocean plastics and produced in small quantities to reduce the carbon footprint. She also donates repurposed stock to mental health charities. Now, that's a cause worth dressing for.