Rapha Guide to Base Layers
In the hierarchy of technical cycling apparel, the base layer is often the most overlooked or misunderstood. As a piece of kit in constant contact with your skin, it is the foundational layer that can enhance your comfort. Choosing the right option is not merely about warmth; it is about maintaining a stable microclimate, regulating your core body temperature by wicking moisture away from the skin.
The primary function of a base layer is to move sweat away from the body. If moisture remains on the skin, you risk overheating on climbs and chilling on descents. By creating a thin layer of air against the body, a well-chosen base layer provides an insulating buffer that keeps you dry and comfortable. Whether it is a high-summer race or a sub-zero winter epic, when your base layer is working properly, you won’t even know it is there.