BEST FOR: High-mileage training runs; heel strikers.
THE TEST: This season, Adidas unleashed a new proprietary foam it calls Boost and trotted it out on this soft, neutral trainer. All our testers noticed it immediately—there’s a lot of bounce to this shoe. “Instantly likeable” and “totally uninhibiting” popped up on test forms. The shoe has a remarkably quick turnover, although the foam is a bit soft for really efficient running, and the ten-millimeter drop caters heavily to heel strikers. Testers’ one universal gripe: there’s not nearly enough room in the upper near the laces—and only four lace crossings total.
THE VERDICT: Energetic cruiser. 9.7 oz; 10 mm drop.