Zaino is a brand - a very good one a that. I just used stuff cheaper this time as I had a free day off and neeed some product quickly - so I bought what was stocked locally.
You don't need the polisher. Makes life easier, but good old elbow grease will do the trick too. But, you can pick up the 12v ones for around £10 so they're worth getting. I'm sure you can spend much more and get something better, but that did the trick for me.