Thanks for your question! If you have narrow feet, make sure to look for something with a last width of 100 or less. Depending exactly how narrow your last width is should help you decide what size to look for. Luckily for this new line of rear entry boots from Nordica, these boots come equipped with a 3D cork liner that is fully moldable to your foot for the most precise fitting and comfortable experience on the hill. If you have any questions, please feel free to reach out to our customer service team for any further assistance (1-800-818-0946) We hope this helps!