It may be cold when you step out of the truck, but once you walk a field or two you may be on the verge of a sweat. That’s why clothing layers are imperative to the upland hunter. Much of your layering, of course, depends on the weather. Preserve seasons typically run from September—when a T-shirt is permissible—through the coldest winter months. I employ a three-layer system that’s suitable for all but the most extreme cold: a moisture-wicking base layer, such as those available from Columbia; a long-sleeved shirt of a thickness relative to the cold; and a button-down shooting shirt. The shooting shirt is optional, but shirts such as Bob Allen’s High Prairie Long Sleeve Shooting Shirt offer a shooting pad on the shoulder to soak up recoil. In warmer weather, I may just wear a T-shirt under the shooting shirt. With experience, you’ll learn how many layers you require to be comfortable at a given temperature.