This iPhone 5 case has been tested for several months now and works without flaw. This phone has been dropped several times with no dammage to phone or case.
The design features 2 rounded corners and 2 squared corners which have holes for a jump ring or lanyard. Shapeways nylon material offers good friction when in a pocket so it won't slide out easily. Case also fits very well in may car mount system.
Important! Always insert phone top first at an angle and snap case on toward bottom. To remove phone, reverse action by prying case off bottom first and then slide phone out. There are 4 slots on case for flexing. I did spray clear lacquer on the black case.
Also note, I have had one case that was a bit loose. Same file but it must have been printed in a different orientation. This I can not control. I simply put some masking tape strips on the inside to fill the gap. The ones pictured fit like a glove.