Performance mesh upper for lightweight breathability Foam padding placed around your ankle collar & under the tongue for an incredibly comfortable fit & feel Deluxe foam sockliner molds to your foot for added underfoot comfort Charged Cushioning midsole uses compression molded foam for ultimate responsiveness & durability Durable outsole pattern for flex & traction 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.