Constructed for competitive runners, the LYTERACER� 2 running shoe features a responsive FLYTEFOAM� Propel midsole foam, which helps improve the rebound of your stride. This material is designed to transfer energy absorbed from impact with the ground to the next step, propelling you forward, faster. The mesh upper helps feet keep cool and dry, while the help of the mesh insole allows air to circulate within the shoe. The LYTERACER� 2 is also fitted with an AHAR� outsole for a softer step and improved durability. For increased stability, the shoe features TRUSSTIC� SYSTEM technology, which reinforces the middle part of the sole.