Propulsion and absolute performance: dominate the most challenging terrains.

Designed to reach the top of the podium at the planet's most prestigious ultra-trails, the Tecton X 4 reaches a new level. Thanks to the integration of the latest innovations from the PROFLY™ X range, it transforms the unpredictability of technical trails into a fast, fluid, and devastating playground.

• Explosive dynamics: Its parallel carbon fiber plates have been realigned and custom-tuned to amplify propulsion at each push-off phase and deliver explosive energy return.
• Advanced Matryx® Micro upper: Ultra-durable and incredibly lightweight, the new upper ensures maximum ventilation to keep your feet cool, even during the most intense accelerations.
• Dual-density PEBA cushioning: Incorporates two layers of our lightest, most dynamic, and resilient foam, absorbing repeated impacts without ever sacrificing responsiveness.
• Surgical support: Its extended knit collar acts as a barrier against debris, while its modernized lacing architecture locks the instep for unwavering stability on challenging descents.

Ready to smash all your records, the Tecton X 4 has only one objective: the record.