Search engines love meta descriptions and meta data. It tells them more about your product / page / shop etc. The more (useful) data you provide, the better search engines can index your content. It will also be used in search results so make sure to add ‘human-readable’ text.
When a proper meta-description is given, the potential customers will find your product more easily and can be seduced to visit your webshop. It will contribute to more new customers.
