These are some of the parameters you can use to target contacts.
You can use these by themselves or combine with other parameters to narrow your segment further.
Custom tags (PRO) - Any custom created tags appear here, grouped by category.
Custom fields (PRO) - Any custom fields appear here.
Magento attributes (PRO) - All synced Magento custom attributes appear here.
Shopify tags (PRO) - All synced Shopify custom attributes appear here.