Kick start

Ashley Brown and T.J. Gray have designed top-of-the line gear for almost every major athletic company. Now they're launching their own trail-running shoe brand: Xterra.

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Xterra shoe
Brown and Gray, who run in three to four triathlons annually, researched their new shoe, the Xterra, by examining photos and Internet footage of big cats' paws. They discovered that their pads - not claws - wrapped around rocks and uneven terrain to give them better stability.
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LAST UPDATE: Nov 10 2008 | 7:21 AM ET
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