You soak them in a bucket of water, then wear them on your feet as they dry. After that, they become the most comfortable flips in the Universe. It also works well to rub in a little leather conditioner (like Mink Oil or something similar), it brings out the natural beauty of the leather. They remind me of a favorite pair I had many years ago, that I wore until they fell apart. This is my 2nd pair of Hippie Shop Buffalo Sandals, the first ones lasted about 3 summers as "outdoor flips", and a...