Stick with what you know--the Wave Rider 21 Running Shoe is the consistent and reliable performance that you love about Mizuno. Using the AirMesh upper and DynaMotion Fit technology, you get an optimal fit with stretch mesh material that moves with your foot and provides the superior breathability that you need for those mid-summer runs. While the InterCool ventilation system works with the breathable mesh through reducing the heat and humidity build up within the shoe to help prevent sweaty feet so you stay dry for multiple miles. Designed specifically for a woman's foot, the SmoothRide technology uses a network of grooves to create an ergonomically smooth heel to toe ride while the CloudWave's thermal elastic midsole creates cushioned support from the heel to midfoot. You'll be running with a pep in your step that your husband just won't be able to keep up with. And when you approach the base of the hill on the final stretch, the X10 carbon rubber gives you enhanced traction to tackle the climb and sprint to the finish.