Used condition Great trail running shoe! I decided to go with a better fitting size. Size: 8 Colors: black, solar yellow, & crystal white It is one of the first trail running shoes from adidas to feature a bio-based thermoplastic elastomer (TPE) plate that's made out of 90% renewable carbon. The TPE bio-based plate runs the entire length of the shoe, sandwiched between the midsole and outsole for lightweight, durable rock protection over long-distance mountain trails. Created using renewable carbon sources and using bio-based ingredients.