Ermenegildo Zegna ($2,095), zegna.com. Photograph by Brad Bridgers
Presidential, populist, powerful; the navy suit, in the words of Tom Wolfe, is bulletproof sartorial armor. It may not be as smooth as the black one-button or as trendy as the gray three-piece, but big blue will never let you down. A great navy suit, like this two-button in worsted wool by Ermenegildo Zegna, is always worth the investment.
Buy the Numbers
Look inside any top-notch suit and you'll probably see a label like super 100s or super 120s. The numbers refer to yarn count and were devised to classify super-lightweight wools. The higher the figure, the finer the material. But that doesn't necessarily mean you should splurge on a super 200s suit. Anything above the 80s and you're in quality territory—hit the 150s, however, and though you may love the weightless feel, your suit becomes far more vulnerable to wear and tear.