While some designers are keener to encourage the world of fashion into burning out their lungs, others are more concerned about the environment we live in. Gucci will unveil a new range of optical frames made using sustainable materials. They have joined hands with eyewear manufacturer Safilo and will launch four models in the brand’s green and red hues. These glasses are an alternative to petroleum-derived plastic. In August, two sunglasses made of bio-based material synthesized from castor seeds will also be launched.