Whether you're out for a short hike or an all-day adventure, you'll forget you're wearing these form fitting winter crampons. The "lightest steel crampons available" flex with your feet so that your natural stride stays… natural. At 21.4 ounces a pair, they're designed to work with all footwear, whether rigid or flexible, due to Kahtoola's patented LeafSpring® Flex Bar, which reduces stress, offering permanent flexibility. The front and rear independent Quick-Fit Binding System makes sizing effortless, and 10 spikes per foot will keep you on your feet over the harshest terrain. 3/4" spike length, Snow Release Skins included, 4130 Chromoly Steel. Fits most boot sizes.