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  • By Aaron Hersh
  • Published Aug 30, 2012
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The sole is intended to let the foot bend laterally with a little freedom instead of locking it in place, which can take a toll. Photo: Aaron Hersh

3. The sole is intended to let the foot bend laterally with a little freedom instead of locking it in place, which can take a toll.

Liz Hichens is the Web Producer of Triathlete.com. She is an Ironman and marathon finisher and fan of all endurance sports.

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