Saucony ProGrid Jazz 18 Man A3-5.5 US has the following specifications DescriptionNew version of the most sold shoes in the Saucony's House, ever well cushioned thanks to the midsole in "Imeva" with "Progrid" placed in the heel zone. New also the sole design,now more flexible, more performant. Upper more reinforced and contenitive.Brand:Manufacturer's ID:20276/02Recap Features:Shoe's Weight: 281 gCategory: A3 Maximum CushioningDifferential: 26 mm (Heel) - 18 mm (Tip)Type of Gait: NeutralIdeal Terrain: RoadTechnical Data:We remind that to use this Infographic you must mention the source as from the Law of Copyright.What's the Differential?The "differential", when speaking about the running shoe, is the difference in millimeters of the rubber layer placement under the heel compared to the same place of the forefoot protection.Shoes A3 - Maximum CushioningThe category "Maximum Cushioning" belong to those shoes which usually have a good spread between the heel and forefoot. They are the most used by runners in training and are strongly recommended for any kind of mileage. Ideal for athletes with a neutral gait, and for those who use custom orthotics.Neutral GaitHere we analyze how the foot meets the ground in the act of running. The first contact is usually in the rear external part of the shoe. As the arch lowers and is crushed by the weight of the body, the movement is called pronation. The phase of pronation stretches and loads the calf muscle which subsequently pushes the body forward, which is accompanied by a movement of the foot called supination.
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