If you’ve ever wanted to get your hands on a 3D-printed shoe, here’s your chance. In honor of World Oceans Day, Adidas and Parley for the Oceans are giving away 50 free pairs of their beautiful 3D-printed running shoes made almost entirely of recycled ocean plastic. Around 16.5 post-consumer plastic bottles and 13 grams of gill-net plastic were used in the production of every sneaker. Read on to learn how you can enter.

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