So I have created flows before where the flow is started from a record using a custom button, and that record's ID is passed into the flow as a variable, which is great!

However, I now want to do this but starting from a list view, where I would select (check) a bunch of records and then click a custom button to start the flow, and have the record IDs of all the checked records pass into the flow as a list of variables (I think it would be an sObject variable?)

Is this possible? 
Thanks