Cheap, plasticky rubbish, the kind of quality you'd find in a christmas cracker.
I have to say that I was rather horrified at the buld quality of this thing - OK, yes it's fairly cheap, but it is also very flimsy too, and won't last long. After just 2-3 uses, the plastic plug part of the drive had visible signs of wear, the plastic casing has become creaky.
The Cruzer is extremely slow at writing, pulling a whole 5MB/sec, which is next to useless. Reading is ok at just over 30mb/sec.
It's the build quality of this product that is the shocker for me though.