Designed to meet the needs of underpronators to mild overpronators. This type of runner does not absorb shock naturally through pronation so they require a shoe with a great deal of shock attenuation. Asics' top-of-the-line cushioning shoe. Features: Breathable synthetic upper Biomorphic fit Enhanced personal heel fit 3M reflective IGS (Impact Guidance Sytem) to enhance the natural gait Solyte midsole for provides bounce-back with minimal weight Visible rear and forefoot cushioning  AHAR+ heel for durability DuraSponge forefoot Weight 285g Category - Cushioning