The Terrex Agravic Ultra were designed in collaboration with one of the fastest mountain runners in the world, Ekaterina Mityaeva. They are one of adidas' first trail running shoes with a sustainable TPE plate, made from 90% renewable carbon. This TPE construction is found throughout the length of the shoe, providing lightweight and durable protection from rocks on long-distance mountain trails. Boost energy return technology and the incredibly lightweight Lightstrike technology ensure high responsiveness and shock absorption with every step to maintain your pace on technical mountain routes.