TopACE Slim Shell ($9)
If you're a minimalist that hates using thick bulky cases consider the TopACE Slim shell. It's more of a snap-on cover than a case but should offer just enough protection to keep your phone safe.
This case is made with precision molded hard plastic, but it doesn't cover the top or the bottom completely. Allowing owners to quickly snap the phone in and get a little protection without making the phone thicker. It's also grippy so you won't drop the HTC U11 and shatter the large 5.5-inch Quad-HD display.
Choose from four colors and enjoy this slim shell case.