The key to a balanced cycling wardrobe is versatility. Since proper temperature regulation and moisture management is as critical for winter training as it is for summer racing, you should be layering your kit around the super-versatile Hincapie PowerCore Flex Short-Sleeve Base Layer. Regardless of where the thermometer mercury lies, the same core principles of the layering apply - proper moisture management prevents your jersey from becoming saturated with sweat and inhibiting your skin's natural ability to regulate temperature. Hincapie's paper-thin PowerCore FlexTek fabric utilizes a recycled polyester stretch fiber weave with hollow 'cores' to deftly wick the moisture from your skin and transport to the outer layer of the garment. Staying dry is clutch for keeping warm -- or keeping cool, depending on whether you're layering with a jersey or a jacket. The fabric's natural quick-drying nature effectively regulates your body temperature while also resisting odor. The PowerCore Flex Short-Sleeve Base Layer has an ergonomic, slim fit and an elongated body to tuck comfortably inside your bibs or tights. It is available in sizes Small through XX-Large and in the color White.