The Sonicblast™ shoe offers a lightweight and responsive ride that makes it functional for tempo runs and your daily training. The midsole features a two-layered foam with FF Blast™ Max and FF Turbo²™ cushioning to help create a lightweight, bouncy, and advanced cushioning running experience. Additionally, an Astroplate™ propulsion mechanism is centered in the foam. This helps propel your momentum forward, creating a faster feel underfoot. A lightweight, breathable mesh material helps reduce the need for additional overlays Astroplate™ technology helps propel your stride forward FF Blast Max™ cushioning provides cloud-like softness and a responsive energy return in each step FF Turbo foam cushioning is the bounciest and most energetic midsole material, helping provide ultimate cushioning and rebound Asicsgrip™ outsole rubber provides advanced grip on a variety of terrain Surface: Road Cushion: High Heel Drop: 8 mm Weight: 9 oz | 256 g Support: Neutral and Underpronation