Choose the purpose of the shoes first, then compare candidates within that purpose. A similar silhouette can still have different fit considerations. Keep the product reference, chosen colour and selected size with every saved pair.
Compare the measurements supplied for that pair with clearly defined measurements of your foot or a shoe you own. Do not mix a foot length, an insole length and an outer sole measurement. Ask how a value was measured if the description is unclear.
Use inspection photographs for the visible pair, including the selected colour and any area that concerns you. Images can help identify a mismatch or visible damage without predicting comfort. Resolve a meaningful size question before deciding to ship the pair.
Continue with the relevant guide
Kakobuy Shoes: Fit, Sizes and Pair Checks · Kakobuy Size Guide: Body, Garment and Shoe Measurements
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Frequently asked question
Can an outer-sole ruler measurement replace the size chart?
Not unless the measurements describe the same object and endpoints. Keep those definitions separate.