Adidas and Parley for the Oceans, an organisation dedicated to reducing plastic waste in oceans, have collaborated to create a 3D-printed shoe made out of recycled ocean plastic.

The shoe is just a prototype, but the goal is to demonstrate how the industry can “rethink design and help stop ocean plastic pollution,” according to Adidas. The prototype has an ‘upper’ made of ocean plastic and a 3D-printed midsole of recycled polyester and gillnets, a type of fishing net.