Drawing on an XT design lineage, the XT-Whisper features a textured upper with layered detailing. The design incorporates a wavy Sensifit™ application and a Quicklace™ system for a secure fit. textured layers Sensifit™ application Quicklace™ system anti-debris tongue agile CHASSIS™ Ortho Lite® diecut sockliner textile lining anti-debris mesh 3D mesh chevron lugs Mud conta GRIP® protective toecap lace pocket