Stretchable rubber hugs the toe and heel of a shoe or boot. Eight rugged, heat-treated carbon steel studs line the length of the foot with a thicker under-sole tread and a reinforced toe cap for more durable wear and better grip. Stretchable rubber with a textured interior for a secure fit and large thumb tabs on the heels to make getting on and off easy. Tested to remain flexible in temps up to -40°F. Size x-large, fits shoe 11-14.