New shoe makes running 4 percent easier, 2-hour marathon possible, study shows | CU Boulder Today | University of Colorado Boulder
It stretches the limits of performance': the race to make the world's fastest running shoe | Running | The Guardian
New Adidas prototype spotted at Houston Marathon - Canadian Running Magazine
Running Shoe Leak Insider & Rumors na Twitteru: "Adidas prototype distance spike. Looks like boost in the forefoot? Via IG @w_bates https://t.co/av4eES74uc" / Twitter