I was skeptical to use the product which professed instant relief to the cold weather in your hands and in your shoes but it really worked! It was soft against my hands, and shoes and never overpowering with heat. The product lasted almost six hours for each of the products - I was surprised that it lasted as long as the package said!
I used the warmers for Hockey but found that they were a little warm and made my feet and hands sweat. I found that it is a good idea to restrict usage to times when it will be cold, and you are not going to be generating any body heat. When Using wicked good warmers its a good idea to wear socks because it may get a little warm on the toes.
These are a must for a little bit of comfort in the winter weather or even those spring days! I pack a lot of them in the car to have during Christmas parades, and other outings! They are pricey, and available for cheaper but I recently had a great gift of an LLBean gift card so It was well worth it!