I got these for my dad who has a size 9 shoe size and his a bus driver. With long hours driving he gets swelling and pain in his feet so thought these would be great to ease his problems.
Just simply cut to size and slip into your shoes. The only trying I would suggest to the company is to sell a smaller size as they would not fit my feet with me being a size 4.
These would also be perfect for running or if you work long hours on your feet.