Rubber sole Imported Lace closure Linear Energy Push system Nature has a way of giving you what you need on a run, from fresh air to the hills that give your body (and mind) a challenge. These adidas running shoes celebrate the beauty of our earth. They're made with nature while giving you all the comfort and incredible energy return of the Ultraboost. The foot-hugging adidas PRIMEKNIT upper supports each stride, and the outsole is made of Continental Better Rubber. This shoe is made with natural and renewable materials as part of our journey to design out finite resources and help end plastic waste.