While stepping into your favorite pair of kicks may make you feel good, have you ever considered the impact that your sneakers have on the environment? From materials to manufacturing, producing a pair of shoes emits around 13 kg of carbon dioxide into the atmosphere. The production of the materials involved, including leather, nylon, synthetic rubber, plastic and viscose, also takes a toll on the environment. Luckily for us, we are spoiled for choice when it comes to sustainable alternatives to everyone’s favorite casual sneaker. The next time you need new sneakers, consider buying a pair from these eco-friendly brands.