<https://2zoles.com/en/for-girls/sandals-for-girls/sun-san-swimmer-pewter-youth/#product>
<http://schema.org/description>
"The sandals are sized in US sizes.\r\nLength of inner sole of sandal:\r\n- size 30/31 (US 13) - 20 cm;\r\n- size 32 (US Y1) - 21 cm;\r\n- size 33 (US Y2) - 21.6 cm;\r\n- size 34 (US Y3) - 22 cm."
<https://2zoles.com/en/for-girls/sandals-for-girls/sun-san-swimmer-pewter-youth/>