The correct Chaco fit begins with selecting the right shoe size for your feet. If it fits great, it will feel great. If you are uncertain of your shoe size, visit your local footwear store—they'll measure your foot size, width and arch length, all important factors when selecting footwear.
Sandals are available in UK whole sizes only. Shoes are also available in UK half sizes. Widths are also available on a select number of styles, please look for the width mark to find those styles with widths.
Note: The most important aspect of Chaco fit is that the footbed contours fit your arch comfortably. We highly recommend being fitted by a professional store employee.