My experience from an ecommerce prospective is that you would be better adding a Category into your structure, for a couple of reasons:
1. SEO. Adding an category page gives you an opportunity to rank for the broader keyoword COATS, rather than just having content targeting the more specific keywords, LEATHER COATS etc. The category pages give you an opportunity to add additional pages of content which contain more keyword diversification and some more anchor text - Just don't go too heavy on it and do be sure to add the keyword variations, make the content look natural and importantly, make sure it is of value to your visitors - and it has a natural readable structure, rather than just content designed to satisfy the Search Engines. All too often it is easy to focus on the content from an SEO perspective only, and in doing so neglect the most important aspect - the end user experience. A well thought out Category page will give you many SEO benefits.
Another consideration would be the development of content that can create a foundation for SITEWIDE LINKS. All of the Sitewide links I have gained have been as a result of Category pages/Sections - rather than individual content pages. Of course you can't directly influence whether or not you get Sitewide links, but having the structure in place will not hurt.
2. NAVIGATION/USEABILITY. A Category page, which contains a list of all of the individual product pages also allows your user to get an overview of all of your product variations within a category and can then select a product which is most relevant to their enquiry. You will also have an opportunity to present them with additional options that they might not have previously considered (or been aware of), such as PVC COATS for example.
I also think the Category option gives you scope to really expand upon your product range without having any URL duplication issues (for example) Home.com/leather-coats.html as opposed to Home.com/Mens-Coats/leather-coats.html or similar. A slightly longer URL which contains the targeted keywords helps both the Search Engines and your User.
(If I am looking for shoes for example and I saw www.domain.com/lmens-shoes/casual-eather-shoes.html I would be more inclined to click than if I saw www.domain.com/leather-shoes.html) as I can see from the URL that the page is more relevant to my gender and search enquiry.
Incidentally, I developed (and SEOd) an ecommerce shoe store for a friend and the VAST majority of their business is the result of specific LONG TAIL keyword searches, rather than the BROAD SEARCH keywords, as the searchers who use long tail searches are further down the buying funnel. So a hit for Gold Leather Gladiator Sandals would convert much more than a hit for Womens Sandals as an example.
Youl would also have better control over navigation elements as your product range expands.
Home.Com
Mens Coats
Womens Coats
etc and the individual product pages underneath.
Without this you could end up with a very difficult to navigate structure.
A logical layout will give you control over the content, easier navigation and the opportunity to create pages that target a more diverse range of keywords in a natural way, which will all contribute toward better rankings.



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