Louisville Slugger Omaha Flare First Base Mitt 13 inch (Left Handed Throw) : Louisville Slugger First Base Mitt. The Omaha Flare Series combines Louisville Slugger's iconic Flare design and professional patterns with game-ready performance leather. The flare technology gives you up to 15% wider fielding surface vs. a traditional pattern. Giving you a quick break-in, quick ball-transfer and quick inning.