Mizuno Men's Wave Inspire 13 Running Shoe mesh Made in USA or Imported Rubber sole Shaft measures approximately 2.75" from arch Double Fan Wave for maximum support without the added weight or stiffness U4icX heel wedge for more cushioning at landing Top midsole incorporates new U4ic compound for a more responsive and durable ride Improved air mesh increases breathability and flexibility Softer collar provides snug, comfortable heel fit without irritation