3DBODY.TECH 2021 - Paper 21.51

A. Jurca and S. Dzeroski, "Estimating Footwear Fit by Using 3D Foot Scans of Shoe Shoppers", Proc. of 3DBODY.TECH 2021 - 12th Int. Conf. and Exh. on 3D Body Scanning and Processing Technologies, Lugano, Switzerland, 19-20 Oct. 2021, #51, https://doi.org/10.15221/21.51.


Estimating Footwear Fit by Using 3D Foot Scans of Shoe Shoppers


Ales JURCA 1,2, Saso DZEROSKI 3,2

1 Volumental AB, Stockholm, Sweden;
2 Jozef Stefan Postgraduate School, Ljubljana, Slovenia
3 Jozef Stefan Institute, Ljubljana, Slovenia


Shoes are available in multiple sizes and widths to accommodate the anatomic variation of human feet. Several footwear sizing systems are being used to indicate the size and width of footwear: UK, US, EU, and mondopoint. Shoe sizes are supposed to help retail customers buy well-fitting shoes. Ideally, all shoes labeled with the same size and width should provide the same fit. However, physical measurements and x-ray images of shoes of the same size have shown inconsistent internal lengths and widths. The aim of this study was to estimate the fit of women’s running shoes, utilizing foot scans and purchase data of shoe shoppers.

A dataset of over 90,000 3D foot scans and matched running shoes labeled US size 9 medium width was used in this study. Each shoe shopper purchased one of 841 running models of 14 most popular running brands. The optimal foot length and width for each model was calculated using hundreds or even thousands of foot scans of customers that bought that model in US size 9 medium width.

Results show a large dispersion of optimal foot lengths and widths for running models that are all labeled with the same size and width. Only 60% of the models in this study fitted as a true US 9 medium. A large dispersion of optimal foot length was observed for shoe styles within most footwear brands.


footwear fit, footwear true size, 3D foot scans


Full paper: 2151jurca.pdf
Proceedings: 3DBODY.TECH 2021, 19-20 Oct. 2021, Lugano, Switzerland
Paper id#: 51
DOI: 10.15221/21.51
Presentation video: 3DBodyTech2021_51_Jurca.mp4

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