Many Google Glass users have complained about the fragility of the device in the past. Google Glass is solid on its own but easily breaks if you drop it by accident. We are going to see tough Google Glass cases in the future. DesignLibero’s Google Glass Guard certainly has potential. It holds your Glass and lets you carry it with confidence. I still prefer to get a rugged version of Glass if Google decides to sell something like that. As far as Google Glass Guard goes, I wouldn’t mind trying the carbon fiber version.