Light and flexible is the name of the game here. A lot of mesh for breathability and Charged Cushioning® to help protect against impact. Just put them on and run for miles.

Lightweight mesh upper delivers complete breathability
Foam padding placed around your ankle collar & under the tongue for an incredibly comfortable fit & feel
Dual density Charged Cushioning® midsole for the ultimate blend of comfort & explosive energy return
Tire inspired outsole pattern provides ultimate flex & superior traction