This running shoe is made with high quality materials and advanced technology. Asics, the company that made its reputation on being the runners running shoe, created this sneaker to be a top of the line cushioning shoe. They started with a solyte midsole material, specifically engineered to be cushioning, light and durable at the same time. Then they added the Impact Guidance System (IGS), which designs these sneakers to flow naturally with the foot's natural stride, for heel strike and toe off. A space trusstic system, which keeps the sole flexible, and stable at the same time. And finally, Asics added the "Twist Gel" cushioning system, which gives your foot the cushioning and rebound it needs and even helps with toe off position. All this bang for your buck, has made given the Cumulus 11 a perfect balance of Fit, Function, reliability, performance and durability, making this one of the greatest running shoes ever engineered.