Shoes are footwear that is useful for protecting feet. The right shoe sizes is the main factor of the functional aspect in comfort of wearing shoes. Shoes which had been sold massively still have different standard of the sizes between one brand and another, so that the consumers will find it difficult to determine which shoes are right for the foot. The purpose of this study was to design a shoe sizes for children aged 4-6 years based on foot anthropometry data, namely, foot length, foot width and foot ball circumference. Data collection was carried out on 100 boys aged 4-6 years. Anthropometric measurements of the feet were done manually using a ruler, measuring tape and calipers. K-means cluster was used to process data of foot anthropometric size and produce a shoe sizes reference with healthy allowance value from the foot growth chamber to design the size. The shoe sizes produced was 21 patterns of shoes sizes and could accommodate 87% of the total 100 respondents.
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