Your products are the goods, digital downloads, services, and gift cards that you sell. You add a product in Shopify by entering product details and uploading product images. If your product has options, like size or color, then you can add a variant for each combination of options.
When you are adding or updating a product, you can make the product available to one or more of your sales channels.
You view, add, update, and organize all of your products and variants from the Products page in the Shopify admin.
If you want to save specialized information or files for your products, then you can add custom fields to your product pages by using metafields. If you have an Online Store 2.0 theme, such as Dawn, then you can use the theme editor to connect Metafields to your theme and customize your pages to the product or variant that's displayed.