eForCrazy Anti slip shoe Boot Crampons Walker Traction Cleats For Snow and Ice Easy Slip On, Outdoor Durable Prevent Slipping From Ice/Snow Special rubber compound stays strong and retains elasticity in subzero temperatures for maximized durability Fits most adults shoes or boots of size 35-44 Special compound and form fitting design retains elasticity and fit in all temperatures Anti-slip tread design,excellent traction on ice and snow to help to avoid those treacherous slipper Ice Diamond carbide tungsten spikes, with nail head design, are molded into Dura plastic for longer wear and durability