Korkers Footwear Men's IceTrac Sole Snow Boot Outsole synthetic-and-rubber Imported Rubber sole Fits korkers stormjack, snowjack, and icejack boots Omnitrax 3.0 interchangeable sole system adapts your traction to meet changing weather conditions Grips snow and ice while hiking, snowmobiling, or working outdoors 16 ultra durable carbide studs per foot (32 total) for extra traction on icy surfaces