Saucony Omni 21 Running Shoes Count on the new Omni 21 for your everyday routes. Built using a dual-density PWRRUN cushioning, it's light and softer no matter the distance. These shoes define feel-good running. Breathable Mesh Upper Ensuring you remain comfortable during your run, the shoes have a seamless, breathable upper. This upper construction supplies your feet with a constant supply of airflow, preventing uncomfortable heat build-up from occurring. This works by replacing the warm, used air with fresh, cool air, for the optimum level of comfort. Not only this, but Saucony intentionally ensures that the upper is lightweight, and uses supportive 3D printing ensuring your feet remain super comfortable from start to finish. An engineered midfoot support system keeps your feet stable and helps to lock in the perfect fit. Finally, to supply your foot with further security when wearing the shoes, a traditional lace-up system locks down the foot. PWRRUN Mids