If you have to walk on snow....get these. Dont even think about it. Just get them. Then, come back and thank me for the suggestion because trust me, you won't fall. I put them on boots. Affixed them more firmly with Velcro at both top and heal. They were not moving off my boots. These have caused me no stress and in fact, took the stress of walking on snow and ice away.
Highly recommend these. Wish I could give them 10 stars.