Built with the toughest materials, the K1 Series Heelstop is made with ice-penetrating tungsten carbide spikes, TR freeze-resistant rubber, and reflective hi-viz strips. Features: Ice-penetrating tungsten carbide spikes cover the entire heel for maximum slip resistance Freeze-resistant industrial quality TR rubber remains flexible even in the most extreme cold weather conditions Reflective strips provide added safety when working in low lit working environments Easy to attach and remove with convenient Velcro straps Unique design allows driving and climbing without interference Specifications: Gender: Unisex Strap Color: Black Spike Material: Tungsten carbide Special Features: Waterproof, Slip-Resistant Spike Type: Molded In Application: Outdoor Surfaces Style: Defined Heel, Non-Defined Heel Strap Material: Leather/Hook & Loop Grip Type: Spikes Traction Attachment Style: Strap-On