Hi Philip,
I'm italian too 
Nice to meet you.
From a quick peak at your site I have seen a couple of problems (IMHO).
The most important is that many meta descriptions and page titles are basically a collection of keywords: scarpe ...., scarpe...., scarpe... and/or with spelling mistakes. This is not only bad for pure ranking pursposes, but it's also going to reduce the CTR from SERP pages, because as a user, if you see these kind of results in a search page you're not really keen to click on them.
Second, maybe a little longer text on the product page would help.
Also, some of the title tags and metadescription are duplicate.
Best
