These are serious training shoes. There's a leather on the top of your foot to keep you stable, flex grooves on the bottom so you can move, and Charged Cushioning® for max impact absorption. All you need to do is work. Lightweight mesh upper with textured overlay details delivers complete breathability Dual-external heel counter hugs for your foot for added stability Leather, mid-foot saddle provides comfortable support Cushioned sockliner molds to your foot, eliminating slippage & providing ideal underfoot comfort Charged Cushioning® midsole absorbs impact & converts it into a responsive burst Full rubber outsole with strategically placed flex grooves for multi-surface traction & flexibility