While these are among the priciest type of traction aids for ice, these are the most recommended and the most effective of them all. They are small, compact, and can be folded in a medium sized pocket. The rubber stretches according to the size of your specified foot and will stay put as you tread on ice or trail. They are interchangeable, so you can switch to either foot with no notable difference. The spikes are large and sharp enough to cut through ice and keep you from slipping even on inclines, while remaining reasonably safe enough to not hurt skin. They last long as long as you keep away from concrete and rock, which may dull the steel. Worthwhile to have while hiking on the trails in the winter.