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From Fellrnr.com, Running tips
Created page with "{{H:title|Because the foam used to cushion a shoe is not especially hard wearing, many shoes have a harder rubber outsole, but this harder rubber is also heavier.| '''Outsole'..."
{{H:title|Because the foam used to cushion a shoe is not especially hard wearing, many shoes have a harder rubber outsole, but this harder rubber is also heavier.| '''Outsole'''}}
