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.. 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. Offset: 8mm. NEUTRAL: For runners who need a balance of flexibility & cushioning. Lace type: Standard tie.