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Who needs it: Women who continually mix it up at the gym with cardio, weights, and classes.
What it offers: Whether you're cranking out lunges or striding uphill on the treadmill, the Gel-Upshot keeps feet "stable and secure," thanks to a firm plastic insert at the arch. Fans of plyometrics will appreciate the bouncy sole, which has gel-filled cushions under the heel and forefoot that "absorb shock extremely well." One gym rat fell hard for the shoe's attached tongue: "I like that it doesn't shift from side to side when I do!" ($85; zappos.com).
Your ultimate guide to make athletic shoe shopping simple
Your guide to make shoe shopping simple.
Expiration Date: Extend the Life Span of Your Fitness Gear