Oversized Due North� All Purpose Traction Aids are designed with a deeper toe box and wider sole for larger footwear, such as rugged work and Pac-style boots. All Purpose Oversized Traction Aids are ideal for those who work and play outdoors. Increased traction helps prevent slips and falls on snow and ice, reducing the risk of pulled muscles, fractures and back problems caused by quick slips or falls. 6 replaceable Ice Diamond tungsten carbide spikes for maximum grip Spike diamond pattern allows more push off and lateral grip Bi-directional tread for added traction Special compound rubber retains elasticity and fit in all temperatures Quick Fit support rings and holes provide easy adjustment and easier on and off Extra wide, extra thick heel strap gives better grip, durability and longer wear No straps, snaps or buckles Lightweight - footwear and product become one Stores easily into handbag, briefcase, glove box or pocket Due North Traction Aid Review: "Since receiving my pair of Due North\xAC All Purpose Oversized Traction Aids, I use them every time I go out ice fishing. They are fantastic. The people I have fished with, outdoor writers, TV hosts and friends, thought they were easy to use, and you really GOT A GRIP on the ice but still had the comfort of your boots, instead of the bulky arch breaking ice cleat that straps on or slides onto your boot. I have now incorporated them into my slide presentation and articles I write." - Mark Martin, Professional Fisherman