If the weight of your iPhone isn’t an issue and protecting it from the most brutal elements is, then you want an EXOVault.
It’s machined aluminum or brass in two pieces that screw together. The aluminum is anodized and is very hard to scratch, the manufacturers tell us. While it makes the iPhone substantially squarer, it add just 1.5 ounces to its weight.
Yes, it’s certainly different from the oh hum plastic and rubber iPhone cases we see everywhere. Just think of it as the ultimate and impenetrable condom for your iPhone.