"The AEtrex Zoom Runner shoe provides the stability and shock attenuation thats essential during high-impact running endeavors. Plus, you can customize the Mozaic insole to meet your individual needsits fast, easy, and youll notice the difference immediately. The AEromax mesh upper maintains optimum breathability to keep the foot cool and comfortable, while the TPU structured logo design offers dynamic support, resilience, and structure. The molded, external heel counter delivers rearfoot stability; the Web Suspension Footbridge provides midfoot support. The cushioned Sky midsole works in conjunction with PRS midsole technology to relieve pressure in the most sensitive areas of the foot. The durable rubber outsole ensures slip-resistant traction on a variety of surfaces."