The Mizuno Wave Ronin 4: quick, light, awesome. Slip these shoes on and you'll understand what we mean. These super flexible racers are built for speed, with a lightly padded midsole that forms to your foot, bending at toe off and snapping back into place with plenty of energy. The soft breathable upper has a slipper-like fit that caresses your foot as you fly down the road.

Over the last 10 years, Mizuno has been known for making fanatics out of serious runners who try their shoes. The cult following is attributed to the ultra smooth ride found across their entire shoe line. So when they make a racing flat, you know it's going to be good and this is certainly the case with the Mizuno Ronin 3. Thanks to the heel Wave technology, the Ronin 3 delivers enough protection for fast marathons and yet feels light enough for an elite 5K.

The Musha 4 delivers even greater performance with an updated midsole and snazzy new upper. Its minimal yet stable ride receives extra bounce with the addition of an Ap+ midsole for responsive cushioning, and soft overlays provide a more supportive fit that stays comfortable for miles on end. Now available in a true women's B width for a closer, more comfortable fit.