Live in Michigan and bought these to wear cleaning snow and ice off of my driveway which is about 30 ft long and has about a 30 degree slope.  Without these spikes, shoveling is dangerous - literally.  Can't tell you how frightful it was before I got these - the sense of slipping and falling and doing serious injury to myself was constant.

With these spikes , as someone has already said - NO FEAR! Made cleaning the drive after 6" of snow yesterday almost a pleasure....I said almost (LOL).

Easy on, easy off...terrific design, functionality, and quality....couldn't be more pleased!!!!