• Waterproof • Ice-Gripper technology outsole • Comfort rated to -30°C | -22°F • Ballistic nylon upper • Removable ultralight insole Shaft height: 6"/ 15.2 cm Shaft circumference: 14" / 35.5 cm Heel height: 1.5" / 3.8 cm Platform height: 1" / 2.5 cm