The key to staying warm on a cold ride is to stay dry and to hold on to the warmth that our bodies generate while riding. We use a light weight, pliable 3-layer fabric with a wind shielding, breathable membrane. Not only does the membrane stop wind from getting through, but it also stops your body heat from escaping, keeping you warm and comfortable. Our Thermal Jacket features Roubaix fleece, and a higher (7.5 cm) collar that helps you stay warm when it gets cold. Another fine feature on all of our outerwear is the 1-finger zipper, that means you can ventilate easily going up, and re-zip going down.