Urgently need a shock-resistant case

hello,
is what you could tell me where I could find resistant shell and a bit tight for Blackberry Passport? I despair of finding such cases for my two Passport, until I bought a present to each new BlackBerry with a shell Otterbox but I contacted them and they do not seem to have decided to make for the Passport and as I work a lot outside I do not want to risk having problems with my devices, such as waterproof protection I find that "packets" or place the Passport inside, but this is not enough for me, it is not strong enough shock ...
thank you in advance for your feedback, kindly.