The Rocket X is Hoka One One’s entry into the carbon-plated performance racer category. Although the early stage Meta-Rocker doesn’t feel as pronounced as in other carbon-plated racers, it is obviously effective. Aliphine Tuliamuk used it to win the women’s Olympic Marathon Trials last February. The Rocket has all the right specs for a super-fast racing shoe: an airy, seamless upper producing great lockdown; the lightest midsole foam –– CMEVA –– that Hoka has ever produced, and a firm, responsive feel that remains forgiving. All of these elements add up to a racing flat that actually feels more traditional than any other plated racer. Wear testers have observed that the Rocket is responsive but not bouncy and that there is little exaggerated rocker feel. The meta-rocker geometry appears to be subtle, but very effective. If you want to go fast, but find that the usual carbon-plated shoes are too aggressive, the Rocket X might be your ultimate race-day shoe.