Adidas took to the streets of Boulder on Memorial Day to ask racers to exchange the shoes on their
feet for its Ultra Boost shoe.

The event reached 50,000 runners.

“These are comfortable right out of the box,” said one runner, according to Adidas. “I’m actually obsessed with the look,” another mentioned.  “I feel like I could run this again in these.”
 
Adidas is donating old pairs to Soles4Souls, an international non-profit organization committed to fighting poverty through the distribution of shoes and clothing.
 
Called “truly the industry leader” by Runner’s World, Boost provides the highest energy return of any other shoe on the market, performing better than almost 800 shoes the magazine tested. Adidas Ultra Boost is available for $180 on Adidas.com.