I've got a Spigen Ultra Hybrid Crystal Clear which is a rigid plastic back with the sides having a little bit of flex. The sides actually stick out quite a bit especially compared to the VRS design Crystal Bumper Hard Case. I have one in Gold that is a clear, thin, shock resistant tpu case with a removable hard plastic colored bumper or edge (they also come in silver, black, orchid, blue, red, green, and pink). I really like this case. It's easy to install and remove, you don't have to take the bumper off the main case to install or remove it. It's really lightweight. It also says it's U.S. MILITARY Standard Drop Tested 810G-516.6. You can plug the phone charger in while either case is on and the wireless charger works fine with both cases. I paid more for the VRS case but it was under $23 including tax delivered. I recommend it. The photos show the front and back of the VRS case. You really only see the colored bumper from the back and sides.
VRS DESIGN CRYSTAL BUMPER - front
View attachment 267962
VRS DESIGN CRYSTAL BUMPER - BACK
View attachment 267963
Spigen Ultra Hybrid Crystal Clear
View attachment 267964