Marware is shipping the SportGrip Edge for iPhone 4 (http://www.marware.com/products/iPhone-4/SportGrip-Edge-for-iPhone-4). Designed as the ultimate balance between case-minimalism and protection, the US$19.99 case helps to protect the edges and corners against minor impact, and keeps the front and back of the iPhone from coming into direct contact with flat surfaces when laid down.
Two thin sheets of static-cling protective film, fitted to the shape of the front and back of the iPhone, help keep dirt, scratches, and moisture off the glass areas. The SportGrip Edge also comes with Marware’s lifetime warranty. It’s available in black, white, blue, pink, red and clear.