The Due North All-Purpose Industrial traction aid offers unparalleled grip maximum durability and superior operator safety. Best for those who play hard and work harder in ice and snow. 8 (16/pair) industrial quality tungsten carbide spikes provide maximum traction and performance Specially formulated 100% rubber provides maximum flexibility and durability even in extreme cold “Pulse Grip” tread pattern provides added traction and grip Geometrically designed webbing improved shape and molded holes for optional retention strap allows the traction aid to fit a greater variety of footwear (retention strap sold separately) Improved heel fit for better performance and additional spikes in heel pad for added security on ice