The Pinlo Bladedge is the thinnest bumper style case made for the iPhone 4 I have ever seen. At just 1mm thickness, this bumper is nearly unnoticeable on the iPhone 4. The Bladedge incorporates a hard plastic material that is called 'cellulose acetate' which is supposedly a high quality material, fancy isn't it? Though I'm sure you don't care so much about these fancy terms but instead want to know how good really is this bumper case. Find out after the break!