Spike Design Twelve integrated spikes per foot deliver three levels of traction. Tungsten carbide tips bite into ice and packed snow, aluminum steps grip uneven surfaces, and TPU lugs dig into loose terrain. | TPU Traction MatrixAn industry-first TPU Traction Matrix is extremely durable and more abrasion resistant than steel. | Reinforced Eyelets Patented eyelet design prevents tearing at each connection point, allowing the elastomer band to be lighter and stronger. | Elastomer Harness Elastomer bands have a low profile and are ergonomically shaped for a secure fit that remains stretchy in cold temperatures, down to -22°F (-30°C). |