This video looks are the difference between fake Oakely's Jawbreakers, and real ones. Signs are easy to tell when comparing, but what to look for when you are buying a second hand pair with nothing to compare it to?

Spot the following differences:
1) case size
2) case tags
3) case clip
4) frame feel
5) serial number
6) rubber pads
7) nose clip
8) JAW opening
9) cleaning bag
10) laser etching