Whether your job requires you to wear a tie or not, today's gentlemen are happily knotting up at the office. But come summertime, things can get a little swampy. So we often switch out heavier shirts like oxford cloth for something a tad breezier. The same should be done with your ties—look for styles that are a bit more relaxed, cut from lightweight materials. Whether or not you'll be finishing the look with a jacket is really a matter of personal taste. Or rather, how liberal your workplace is with the air conditioning. Herewith, nine easy pairings.