These are life-savers. At the very least, they are limb-savers. The Kahtoola MICROspikes are easy to put on and take off and they barely move around even after long distances. You'll go from "impending accident" to "leisurely walk" on the trail as soon as you put them on under wet, slippery conditions. The confidence and peace of mind they give you is worth every dime. My only word of caution is that it's very easy to snag your pants on the spikes as you bring your back foot forward. This causes an almost instantaneous face-plant in the snow. After doing that a few times you'll get the hang of it and be ready for the next time.