The fish-scale pattern on the back of Nike's Sphere Macro React tennis dress--Maria Sharapova's attire of choice at the 2006 U.S. Open--is more than just decoration. As you perspire, the flaps of fabric swing open to release heat and moisture, so you stay cool and dry. A light and stretchy mesh lining keeps the polyester-spandex material from sticking to your skin. Sharapova wasn't Nike's only model: Roger Federer wore a Macro React crew shirt at Wimbledon.
Inventor: Nike
Availability: Now; tennis dress, $60 and up; crew shirt, $45
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