A solid collection of shirts is the cornerstone of any decent wardrobe. Menswear has skewed extra-casual over the past decade, but the shirt has survived – not only as the foundation of any formal dress code, but also as a reliable staple that’s easy to wear in any number of contexts across the smart-casual spectrum. Layered under a sweater, over a T-shirt or worn with a suit, there’s perhaps no item that you’ll get more mileage out of. Of course, they come in all stripes. Here, the definitive list of the five shirt types that every man should own.