<p>Fast-R3 is the fastest running shoe we’ve ever made – data-back, lab-tested, and built for breakthroughs. After testing it on elite runners and real athletes, we digitally engineered and optimized the product fully based on data. Fast-R3 is designed to shave minutes off your race time. With its 3.15% improved running economy*, this translates to an unprecedented potential marathon time saving of more than 4 minutes and 30 seconds, for a 3-hour marathon runner. We cut 95g from its predecessor, stacked it higher with new and improved NITROFOAM™ ELITE, and extended the carbon PWRPLATE for maximum propulsion. This DIGITOKYO version’s bold design is inspired by the lights and textures of Tokyo at night, with hits of purple as an ode to global competition. *Compared to the PUMA Fast-R NITRO™ Elite 2</p><ul><li>ULTRAWEAVE: Premium lightweight material engineered for breathability</li><li>NITROFOAM™ ELITE: Innovative nitrogen-infused foam technology that offers exceptional energy return, speed, and greater long-distance comfort for race-day</li><li>PWRPLATE: Extended carbon fiber plate for powerful propulsion and elite efficiency</li></ul><ul><li>Fit: Regular</li><li>Toe Type: Rounded</li><li>Fastener: Laces</li><li>Heel Type: Flat</li><li>Heel-to-toe drop: 8.0cm</li><li>Pronation: Neutral</li><li>Stack height: 40mm/32mm</li></ul>