The max cushion Olympus 4 design has entered warp speed into a completely new look. To go along with it, we've increased breathability and durability to the engineered mesh upper. An improved premium tongue offers better comfort and a more locked-in feel. The heel has been rounded to encourage a smoother step from heel to toe and works with the Innerflex™ midsole technology for increased flexibility and performance. To top it all off, we kept the Olympus essentials like the Vibram® Megagrip™ outsole and the Gaitertrap™.