Thank you for viewing. This is a set of 5 socks. They were obtained from a gachapon machine. They weren't in a bag when I got them, so I measured the sizes myself. Product Dimensions Flat measurements: Yellow: Length from heel to toe: 17cm Width: 8cm Length from calf to heel: 16cm White ☺︎: Length from heel to toe: 17cm Width: 8cm Blue: Length from heel to toe: 17cm Width: 8cm Length from calf to heel: 10cm White: Length from heel to toe: 17cm Width: 8cm Black: Length from heel to toe: 20cm Width: 8.5cm Length from calf to heel: 12cm The yellow socks are thick and sturdy, but the other 4 pairs feel thin.