Engineered to excel in extreme conditions the KORKERS IceJack Pro Safety boot still has all of the winter features of the Polar Vortex boot with a composite safety toe for working in hazardous professions. The traction system on these boots is a versatile OmniTrax 3.0 interchangeable sole system for the unpredictable winter weather. The SnowTrac Winter Lug Outsole is great for inches of snow and the IceTrac Studded Rubber Lug gives you traction on the ice. Don't forget about the waterproofing and insulation that keeps your feet warm and dry.