SKU 9856778 Accentuate your foot wear with Due North All Purpose Traction Aid. 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. Traction & slip resistance. Metal construction. Imported. View Zappos.com Glossary of Terms Due North All Purpose Traction Aid