Foot length and width variety of shoppers who purchased the same style and size of running shoes

The fit of a shoe is an important shoe comfort factor. Foot length and width are two of the most important measurements that influence fit (Miller et al., 2000). Incorrectly fitted footwear contributes to the development of foot disorders. Studies have shown that 63–72% of participants were wearing incorrectly fitted shoes based on length and width (Buldt & Menz, 2018). However, these studies used many different ways of assessing footwear fit. Footwear brands provide size charts to help selecting the right size.