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I am working with an ecommerce site and have encountered an issue I haven't come across before and would appreciate some advice on how to proceed. There are multiple variation products with one master product and then up to 20 or 30 variant products, the variation could be colour, size or both. The site has been set up to canonicalise all the variations to the master variant product, which I understand to be best practice. But, this is where the issue occurs, the master variant product URL 302 redirects to one of the variant product URLs. Example below. My question is, is this harmful to our SEO efforts? Would be be best to canonicalise to a preferred colour or size variation? EXAMPLE: Master variant product: www.example.co.uk/primary-category/product-123 Seeing this product on the page and clicking will 302 redirect to www.example/co.uk/primiary-category/product-123/colour-456 On page www.example/co.uk/primiary-category/product-123/colour-456 the canonical tag is www.example.co.uk/primary-category/product-123 Any help with this would be greatly appreciated.