Since there are so many eStores, your long-term success requires a well-considered business approach. It is important to base your SEO description on a thorough analysis done by an SEO specialist.
Category description is the key to high Google ranking because the user really gets to the second page in Google's search results. Content optimization will lead each client to the right item. Use several sentences to describe what is offered within the category but make use of that everything you say is based on SEO analysis done by a specialist like one of our partners.