Lowa Women's Tempest QC Hiking Boot 100% Leather Imported Vibram sole Shaft measures approximately 4" from arch Heel measures approximately 1.75" Boot opening measures approximately 9" around Built for dry climates and trails Lowa Control System manages moisture to keep feet dry and help eliminate blisters and hot spots Injected Monowrap midsole surrounds the foot with lightweight support Full-length nylon shank with PU midsole provides torsional support underfoot