On muddy slippery days why rely on the traction of your boots when you can use these lightweight Kahtoola EXOspikes? These will give you maximum grip and confidence on any surface. Very lightweight, easy and quick to put on and comfortable enough to wear with a pair of running shoes. Feature Details Ergonomically Shaped Thermoplastic Elastomer (TPE) Harness - Features reinforced eyelets for increased durability, attaches securely to a variety of footwear and retains its elasticity down to -22°F (-30°C). Flexible TPU Traction Matrix - Twelve strategically placed 0.29" tungsten carbide spikes are integrated into a tough traction matrix that's abrasion-resistant, lightweight and conforms to uneven terrain. Integrated Toe Bail - Keeps the toe from pushing through the front of the harness for added security while descending. Raised Heel Tab - Provides a secure grip point on the harness for easy on and off in frozen winter conditions with cold or gloved hands.