content: The Zyliss Safe Edge Can Opener is a tremendous improvement over the traditional can opener. Tradititional can openers often fail to complete the full 360 degree cut; forcing the user to bend the sharp edged disk back and forth before it finally breaks free. Even when the disk is broken free, the extrication of the disk from the interior of the can be a very messy, dirty process.The Zyliss Can Opener cuts on the outside of the top rim of the lid rather than the interior of the lid; there is no problem completing the full 360 degree cut. The resulting lid has no sharp edges. This lid can also be pressed back onto the can and used again to seal the can's contents.I'm so happy with the superior Zyliss can opener design that I will never go back to the traditional can opener.