You simply CAN'T slip on the ice when you're wearing these. I believe wearing these can prevent thousands of falls every year if everyone had them. I'm a paramedic and these are essential for my winter footwear. I don't want to be the one getting taken to the hospital after falling. They are easy to apply and easy to take off (don't wear inside on hard floors). Get a size bigger if you want to wear them on your boots. Best on the market for fall prevention. Worth every penny.