Running fanatics will absolutely love the ASICS GEL-Craze Trainer. This high-tech running shoe features a synthetic and mesh upper which delivers both support and breathability. Its FluidAxis platform provides you with a uniquely-structured system; flex grooves are designed to improve flexibility and give you a smoother stride. SpEVAÂ® midsole will improve your bounce-back in addition to giving you added durability. Rearfoot GELÂ® cushioning on this running trainer works with the shoe's asymmetrical two-density midsole for even more support. Rubber outsole provides excellent traction on a variety of surfaces.