Otterbox Impact Case for HTC Vivid
Otterbox usually provide a nice range of cases for the most popular phones out there, and they all offer great protection. Here, I've chosen the Impact case as it's the least bulky of any of the Otterbox range, but they are bound to have a protective option to suit you. If you need something tougher then opt for the Defender case, or for every day use and the odd fall, the Commuter case is hard to beat -- it depends how clumsy you are at the end of the day.
The Impact range of cases is quite new, consisting of just one layer of protection, but for my money this offers the best solution in terms of getting a balance between looks, bulk and protective qualities. It's made of heavy-duty silicone with an inner core that makes sure the force from any knocks, bumps and falls is dissipated away from your phone.
Silicone offers a nice grippy feel in the hand, so there's less chance of you dropping the phone anyway, but should the worst happen this case should ensure your phone remains intact. If this option doesn't suit then definitely check out the other models in the Otterbox family.