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Performance Improvements Speed Shops Canada

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Yellow Speed Racing The foam, mixed with the underfoot form, actually makes it snug at high speeds. Saucony makes use of what it calls “Speedroll” to get you from heel strike to toe off efficiently. Basically, that’s what we used to name toe-spring—the entrance of the shoe curves upward. http://www.thewonderfulworldofgarybond.com

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