Unlike standard foam, the durable, temperature-resistant padding in this running shoe's midsole stays soft and pliable no matter how hot or cold it is outside.
Our tester says: "I felt fast and light on my feet in the Infinti, even with its added cushion." -- Allison McCabe, 26, a teacher in Revere, Massachusetts, competed in the 800 and 1,500 meters at the University of Connecticut and now runs for the Greater Boston Track Club.
Brooks Infinity, $120
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