Under Armour SpeedForm, $120
weights: 6.0 oz. (men’s); 5.1 oz. (women’s)
heights: 26mm (heel), 23mm (forefoot)
Fit: The innovative SpeedForm wraps a runner’s foot like a glove, starting with a snug, seamless heel cup and a secure midfoot saddle connection.
Feel: Perhaps the best example of next-generation minimalism, the SpeedForm lives up to its name: It feels fast, flexible and light the moment you slip it on. Its stitch-free upper – inspired by spacesuits and the material innovation of a bra, of all things – redefines the term “sock-like feel.” The shoe feels like a natural extension of the foot with a smooth interior that is comfortable with or without socks.
Ride: This is one fast and responsive shoe, but one that’s best for strong, agile runners. The lightweight foam midsole provides plenty of cushioning and energy return while still offering a feel-the-ground sensation. There is little inherent support in this shoe but, more than any model in this review, it moves with the precise movements of a runner’s foot.