Refer to the input text as context and select the correct relationship between 'Skechers' and 'shoe' from the available options.
Options: owner of, location of formation, legal form, product/material produced

July 29 (Reuters) - Sports shoe maker and retailer Skechers USA Inc reported a better-than-expected 36 percent rise in quarterly revenue, helped by pent-up demand following the end of labor disruptions at U.S. West Coast ports that had held up imports, as well as increased shipments of back-to-school items.
product/material produced