The Due North All Purpose Industrial is the all-round solution for the tough work environment. Best for those who play hard and work harder outdoors. Features: New enlarged traction heel pad with 2 additional spikes and more heel coverage for increased traction and stability. Textured "Diamond Knurling" lining grips footwear and helps keep traction aids in place. Molded-In retention strap attachment points for use with optional retention strap (sold separately). Special rubber compound maximizes durability while maintaining elasticity in subzero temperatures. 8 Tungsten Carbide Due North Ice Diamond Spikes, along with the bi-directional tread, provides powerful traction with maximum grip. Additional Info: Repositioned Military Grade Tungsten Ice Diamond Spikes provide comfort under the foot and improved traction. Spike patterns strategically placed at the heel and front of the sole, leaving the mid-sole area open for safe ladder use - no need to remove our traction aids when climbing or descending ladders (mid-sole models excluded) Geometrically designed strap webbing and improved shape fit a greater variety of footwear - these traction aids stay on! Industrial grade sole offers unparalleled grip, maximum durability and superior operator safety