Floatride foam technology cushions feet while staying incredibly lightweight. It stays responsive to your movements throughout your gait cycle, providing support every step of the way. Every piece of these high-performance men's running shoes is engineered to reduce irritation, friction, and anything else that might weigh you down as you're racing toward the finish line. Best for: Long distance runs, including marathons, half marathons, 10Ks Floatride Foam technology provides soft and lightweight cushioning for a responsive feel Stabilizing EVA foam rim centers and balances your foot throughout gait cycle Supportive 3D heel cradle is specially contoured to help eliminate heel irritation Rippled rubber outsole adds traction Molded sockliner for durable cushiony comfort (Description from Reebok website)