Men's Techknit RNR-1 Trainer YGroup_valkyrie-elite-carbon-runner while the ultra-thin TYRTac™ rubber

while the ultra-thin TYRTac™ rubber outsole delivers superior ground feedback and traction across all surfaces

it delivers unmatched energy efficiency

This runner features a lightweight monomesh upper for unmatched breathability that's perfect for interval training

the CXT-2 Trainer boasts an array of advanced features designed to elevate your training experience and take on the most rigorous competition and training regimens

as it provides the perfect amount of breathability to keep you moving comfortably

Men's Techknit RNR-1 Trainer YGroup_valkyrie-elite-carbon-runner while the ultra-thin TYRTac™ rubberAll day comfort and versatility. The Techknit RNR 1 Trainer features SurgeNRG+ enhanced with supercritical foam for ultimate all day comfort and durable support for any movement. The Techknit 3D knit upper construction is also a key feature of this shoe, as it provides the perfect amount of breathability to keep you moving comfortably.