An excellent review of the Formula and ION series cases by Wired.com

Customer Reviews:

I was concerened about spending this much on a case for my iPhone although my expectations of quality were high. It is so AWESOME ! I Love It !! Free Shipping Is Great. I'm concerend about drop damage to the phone and the case for that matter. Must not drop it for sure ! The suede back plate is nice although I think the carbon backplate should be a discounted purchase option.  Shipping was very fast. I could not give less than 5 Stars for Sure !  UPDATE ! I Recklessly dropped my phone on a Tile floor about 3 feet and no visible damge to case or my phone ! Fantastic Case ! ! ! !

Simply the best iphone case out there.  Sleek, sophisticated, amazingly strong yet light as a feather.  It feels fantastic in my hand and makes every other iphone case I've ever held seem like a brick.  Expensive but worth every penny.

If you are thinking about buying this case, do Not hesitate! The pictures do not even do it justice. Once you feel this in your hand, you will never want to put your iphone down.  The weight, grip and textures are amazing. Tested cell, wifi AND GPS and all are unaffected. Love the ultra seude backing and earpiece. They give the feeling of warmth and comfort on an otherwise inanimate piece of technology. Two thumbs way up!