dataloader.io is a free tool you may use to export and import data with Salesforce.
In this demo, these are some of the product fields we use for the export demo. Of course, any custom fields you create will also be available for export.
Product ID
Product Code
Product Name
Product Description
Price
Active
Product Cost
Product Price
Weight
It is recommended that you determine all of the fields you’ll want to import before you create you sample export spreadsheet.