Design
The design of this key is really successful, it is really pretty until you you were serving as marks appear on the outer aluminum shell after a few insertions (see photo).
Practicality
The DataTraveler Mini 3.0 is really compact and the fact of not having a cap to "close" the key is very convenient. While this means that the components are exposed to dust.
Conclusion
I am happy with this purchase. For its price, it really is a case and I advise you worry if you do not need high performance in terms of speed décriture and reading.