There is nothing more rewarding than finding a super comfortable pair of flats. The ones that you do not have to break them in for a week, or wear band-aids throughout the day. Being able to walk around for hours on end with flats that will not leave you sore is very difficult. However, I have found that, the ones with elastic around them seem to fit perfectly at all times. Tory Burch makes them just right. They are called Reva flats and they have elastic around the back of the shoe to provide the comfort you need. Various celebrities wear them and they are very chic and classic. They come in an incredible variety of colors and most have a medallion on top representing the brand. You can find them here.