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So the issue is that you have sub-pages which contain a lot of the same information about cushioning, Gore-Tex etc? If the content is reasonably unique, then it's a case of optimising each sub page for 'trainer model name cushioning' or 'trainer model name Gore-Tex' as appropriate. Alternatively, you could create one high level glossary page for all the terms used for all the trainers, and then canonicalise each sub page to that one - then you won't risk the duplicate content filter, and provide a useful resource for people who might be looking for Gore Tex Trainers, rather than Nike Model One With Gore-Tex Trainers...

Hi Dan Thanks for coming back. Great, so canonicals will be taken into consideration regardless. Do you have any suggestions on how to mitigate the negative effects of duplicate content if it is unavoidable? Hypothetically. Excluding canonical tags? Thanks again.