Every cyclist should have a flat kit to enable them to deal with a flat tire. Most kits include simple levers to get the tire off the rim and a set of patches for repairing holes. The Lunar Levers combine these two needs into one. The levers themselves are better designed to help you remove and remount a tire than standard levers. Ingeniously, the levers store the patch kit inside inside the levers themselves, snapping together, forming a single unit, saving space.
A cool tool is anything useful that is superior to comparable items. If you think this tool is inferior suggest a better one. You are welcome to insult a tool, but comments containing insults to individual people will be deleted. Corrections of fact are always welcomed, if stated politely. Recommendations of better tools are dearly wanted and may be elevated to the front page.