Lace closure, Open mesh upper with abrasion-resistant weldings, and padded tongue Snug midfoot with slightly wider toe box Lightstrike and Boost midsole with carbon plate layer Dual-layer Achilles protection and midsole rock protection plate, Continental Rubber outsole Primegreen. The TERREX AGRAVIC ULTRA has been created in close collaboration with one of the world's fastest ultra trail runners, EKATERINA MITYAEVA. 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. 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.