The paper introduces a system for estimating the fit of boots in calves. The system recommends a better fitting boot. Such a system is an essential component for Internet boot sales. The key module of the system is a device for inner circumference measurement of boot shafts. The boot measurement in combination with customer's calf measurement defines the fit of boot. The system successfully estimates the fit and recommends a good fitting boot for a customer when buying boots online. We have

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... ormed a detailed survey with 93 female subjects. The subjects have evaluated the fit in calves of 38 boot models. The data has been later used as training data for a sophisticated system for fit estimation and recommendation. The boot recommendation system in combination with UCS lower shoe recommendation is a perfect solution for an online retailer. The paper describes the measurement device, the survey and the estimation algorithm.