a product is not only the product itself (the core), but also the services and intangibles that surround it (the surround). For example, a pub sells pints (core) and quick service and atmosphere (surround); a clothes shop sells clothing and appearance or personal image, a flower shop sells plants and flowers and ambience in the house. What do you sell?
The customer also wants a choice. What you have to offer consists of a range, a selection of choices, products that complement each other and make it attractive for the customer to come and buy. A pub also sells meals, a clothes shop also sells accessories, a flower shop also sells earthenware. What range of choices do you give your customers? Customers also want to know what extras come with your product.
What do you do that the others do not do? Think about packaging, service, personal attention, brand articles, originality, creativity and so on. What extras do you offer?