Giordana Ceramic Base Layers have beneficial effects to circulation and well-being with their unique ceramic fibers and are true all-season garments because of the Resistex Bioceramic technology. Resistex Bioceramic is a a nylon/spandex/polyester microfiber material bonded to mineral bio-ceramic crystals. The benefits this delivers are derived from the Far Infrared Rays (FIR), an invisible segment of the light spectrum, that the Bioceramic emits. True all-season garments, the ceramic benefits physical performance year round. They reflect the hot rays of the sun in summer creating a genuine barrier against heat in high temperatures. This unique technology helps lower the surface temperature of the fabric, keeping you cool and comfortable. The result is a considerable decrease of calorie consumption and therefore of the body's physical energy. Resistex Bioceramic also has high heat insulating properties allowing body temperature to remain constant even in extremely cold conditions. Constructed from four panels to contour to the body, the spandex in the mix helps create a form-fitting garment. This one-two punch will keep you comfortable no matter the riding climate.