Korkers Footwear Men's SnowTrac 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 Perfect for trail adventures in winter conditions or situations requiring transitions between indoors and outdoors Easy to install and features deep open lugs for maximum traction in various terrains