TX4 is a sturdy “built to last” boot, thanks to the STB Control System™ that provides structure and torsion stability.The hard wearing leather uppers have an essential design and are high abrasion resistance thanks to the PU TechLite all-around rand: The Vibram MegaGrip sole with climbing zone at the toe and Impact Brake System at the rear are designed for climbing routes and return trails on technical terrain. The lacing system derives from the Mythos climbing shoe and regulates tension and internal volume in one easy move. Traverse X the ultimate expression of moving in the mountains in comfort, speed and safety. and adaptability in heel hooks when bouldering.