IceTrac Studded Rubber Lug sole grips snow and ice while hiking, snowmobiling, or working outdoors. Traction includes 16 ultra durable carbide studs per foot (32 total) for extra traction on icy surfaces.No more falling on the iceFits any Korkers boot or shoe with interchangable solesSoles easily snap into place even while standingNatural walking motion locks outsole into place