When Adidas claimed to have made "The Greatest Running Shoe Ever," the ACTIVE.com team was skeptical. However, after a handful of runs in these shoes, we were sold on the fit, comfort and design of the Ultra Boost.
Unlike the usual 100 percent mesh of most running shoes, the upper of the Ultra Boost includes a top layer of a knit material (Adidas' PrimeKnit mesh), which explains the high comfort level and ability to fit to your foot size and shape. The cushioning is out-of-this-world soft, and each stride feels light without the deadening effect that overly cushioned shoes sometimes deliver. As the name suggests, each new step offers a springy action—dare we say a "boost"—to help you quickly off your toe.
The Ultra Boost feels light and quick, making them a great racing shoe for anything from a 5K to a half marathon, or for the run portion of a shorter-distance triathlon, especially if you plan to wear them without socks.
Shoes in image are men's.