ASICS GEL-Nimbus 21 Platinum Men's Running Shoes Gray/Silver/Black : Cloud-like in its very nature, the newest ASICS Gel-Nimbus 21 Platinum provides the same pillow-soft cushioning underfoot with a few improvements to make for a heavenly running experience. Now, this neutral running favorite features a new last and an even softer ride than previous models. Lace-up and get ready to soar in the new ASICS Gel-Nimbus 21 running shoes. For Runners Who... Are considered to have a neutral gait. Those who do not experience mild or moderate overpronation and who have a higher arch as opposed to a low arch or flat foot. What's New? This model features new FlyteFoam Propel and FlyteFoam Lyte Technology. A new SPeVA 45 Lasting employs 45-degree full-length SPeVA foam material for a soft platform feel and improved comfort. Additional reflective elements have been added to ensure better visibility while running in low-light conditions. Technical Elements Upper: Features ASICS FluidFit upper technology that combines multi-directional stretch mesh with stretch reinforcements that adapt to the athlete's foot, creating a truly customized glove-like fit. Midsole: Includes Rearfoot and Forefoot GEL Technology Cushioning System. I.G.S system helps absorb shock and provide cushioned comfort. Features a SPeVA 45 Lasting. An Ortholite X-40 Sockliner adds step-in comfort. Guidance Line Midsole Technology helps maintain an efficient gait cycle. Outsole: AHARASICS High Abrasion Rubber placed in critical areas of the outsole provides exceptional durability.