Most case designs comprise between offering protection and maintaining usability, but the ClearCase has been optimized for both.
The case is sturdy yet thin, and the cut-out for the keyboard is perfect so you can use the keyboard without interference with the same tactile feel as when using the Treo without a case.
A removable hinged protective screen cover is a great addition to the ruggedness of this well made case. The ClearCase has a very secured locking system along with the solid construction to protect your Treo as much as possible.