Terrex Agravic Ultra 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. A blend of responsive Boost and ultra-lightweight Lightstrike works with a TPE plate to ensure high-energy return over mountainous terrain that also cushions every stride to help you keep your pace over technical trails.