The Adidas Response Cushion 19 is a fantastic quality neutral shoe. It is a must have for dynamic runners, offering luxury cushioning as well as a 2D ForMotion heel unit which adapts to your heel strike to offer individual support where it is needed most. NEW stretch Flex - insert in the upper for a smooth transition. Anatomically Moulded EVA Insole - for added comfort and a snug, cushioned fit adiPrene+ maintains forefoot propulsion and efficiency 2D Formotion Heel Unit - for motion control which adapts to your heel strike ensuring you are supported at all times and no matter how you heel lands Torsion System - for independent movement between the rear and fore foot Airmesh Upper - for maximum ventilation, allowing your fee to stay cool at all times A superb buy for neutral runners who want luxury cushioning and good support to help keep you going mile after mile.