Make your next workout the best you've ever had with the Gel-Nimbus 23. Providing runners of all levels with exceptional shock absorption and cushioning, the Gel-Nimbus 23 running shoe continues to offer outstanding comfort and long-lasting anti-vibration protection, making progress within the lineage of a well-known and established series of long-distance shoes. They feature Gel technology both in the front and back of the shoe, which effectively absorbs shocks throughout the transitions of the foot, as well as Flytefoam midsole technology, consisting of reinforced organic fibers that are extremely durable, contract and expand, and provide anti-vibration protection and energy return to the user with every step.