NEW RS-9000
The RS-9000 marks a new turning point in the history of competitive running. Designed for runners who demand maximum efficiency, responsiveness, and control, it brings J Lab innovation straight to the starting line.
126.1g -THE LIGHTEST ON THE MARKET
Every detail has been optimized to eliminate weight. Smooth stride, instant response, and an absolute feeling of lightness in every step.
CREATED IN THE J LAB
Features Light Reactive technology, a highly responsive PEBAX compound that delivers lightweight cushioning and explosive energy return. Its internal carbon plate enhances propulsion and stability, while the technical nylon-thread upper with polyamide reinforcements provides fit, breathability, and thermal comfort at minimal weight.
TESTED BY PROFESSIONAL ATHLETES
Validated under real conditions by elite athletes such as Chiki Pérez and Stella Rutto, the RS-9000 has been fine-tuned to deliver optimal performance at racing pace and over long distances. A shoe created, tested, and perfected in collaboration with those who live speed to the limit.
FROM THE FIRST SKETCH TO THE FINEST DETAIL
Every gram counts. Every step drives innovation. Because running faster is not enough — it’s about pushing beyond the limits of body and time.
