Air/reinforced corners
Cases with reinforced corners belong to the shockproof class. Corner reinforcements act as a bumper/shock absorber — if the phone slips out of your hands and falls on its edge, the protected corners will minimize mechanical impact. The mobile device will remain safe and sound after the fall. Most often, corner protection is represented by special air chambers.
MIL-STD-810
Cases with MIL-STD-810 protection allow you to safely use your mobile device in extreme conditions. Such models are distinguished by excellent shockproof properties, significantly increase the resistance of the phone to the negative effects of moisture, low and high temperatures, various kinds of vibration and other mechanical effects. Initially, the MIL-STD-810 standard was developed for the military, who use radio communications in the field.
Weight
The weight of the case is determined by its material, as well as the form factor. Shockproof pads, as well as book cases, have the biggest weight. Heavy materials include metal, polyurethane and rubber. By reducing the weight of the case, the overall level of aesthetics of the mobile device improves.