For long days and demanding missions, tap the XVe. Designed by Xavier de Le Rue, this expedition boot offers unrivaled performance and protection. Its new XLS-System also enhances strides when skinning. Drop into the future. Loosening the powerstrap extends the shell's range of motion to -8Adeg for enhanced comfort and longer strides while skinning New plastic backwelt features a grooved heel for rocking semi-automatic crampons New expedition model features a snow cover for additional weatherproofing The Dupont Surlyn highback contributes to the durability and stability of the boot. Combined with additional reinforcements, the highback also aids in dictating its stiffness.