I have the same one and it is great. Not to bulking feeling, just right. I always get comments asking what it is and where I got it. Great look with the Alum. back Fits the phone like a glove. On the front the sides have a little lip over the front of the phone. Makes it nice if you lay it face down. The glass does not touch the surface.
I bought this item as soon as I got my iPhone 4s last year. This product is great, good all around protection, not bulky, nice silver accent and love the Oakley logoat the back and on the sides.