The Ekto 2 is an extremely durable, well-designed lightweight case that provides a layer of protection usually reserved for heavier cases.
With a lightweight polycarbonate shell and man-made leather backing, the Krusell Luna Mobile Undercover case keeps the back and corners of your iPhone 4 safe, but little else.
Most iPhone case/wallet hybrids haven't been that impressive, but with the CandyShell Card, you really can consider leaving your wallet at home if you only need a few necessary items.
Incase's Metallic Snap Case is a metal hard shell case that’s both thin and lightweight. It provides protection and coverage comparable to what’s usually found in more substantial, heavier cases.
The Flygrip is an efficiently designed grip that is affixed to your case—or directly to your naked iPhone— that lets you hold your iPhone in a much more comfortable, secure manner.
Though the thinness and design of the X-Doria Defense 360 are impressive, the case’s construction doesn’t hold up to everyday use.