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.FEATURES:-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.Fabric:- UPPER:100% Textile~OUTSOLE:70% Rubber,30% Ethylene-Vinyl Acetate (EVA).