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Hey, so there are a number of ways to do this - but the essence of the process has to be about providing Google with a CSV which has all of the sizing/colour information as separate products - while keeping the products on-site non-duplicated. Having looked through your site, the duplicate content issue is clearly problematic - and bad for users as well as the search engines. My best suggestion for you would be to use Ajax to append sizing/colour to the products - so that the image then updates on the product page when a certain filter is applied. You can then have technically unique URLs for each permutation of the product (which you can use to populate your Google shopping feed) - but these URLs can be pointed back to the generic product URL using the rel=canonical tag. Therefore, yes, I would recommend deleting all the duplicate products and reworking how the shopping feed relates to the on-site content. Hope that's useful! Thanks, Phil