Adidas has innovated themselves with a unique engineering process for the sole of the shoes. It sets the Adidas Boost line apart from the traditional EVA midsole all other lines make, and instead replaces it with thousands of small pebbles of TPU (thermoplastic polyurethane). The boost technology provides significant energy return through the midsole’s springy response as well as a substantially cushioned ride. The Boost midsole does not change performance in extreme temperatures, including intense heat and extreme cold temperatures. Its sock-like fit and expandable mesh in the upper material, allows the foot to expand during those longer runs. Each Adidas model sits on a 10mm heal-to-toe offset. . Lucky Road carries the following models: Boston Boost, Supernova Glide, Energy Boost, Ultra Boost and the Sequence.