If you’ve got some fast winter training to get done, it’s then the C5 Infinium Thermo Jacket comes into its own. In order to keep you both warm and sweat-free when cycling, Gore uses their exceptionally breathable and windproof Gore-Tex Infinium technology. Bitter cold winds can’t get in, maintaining warmth, and yet as you put the power down, the high degree of breathability allows an easy escape route for sweat, preventing the discomfort of chills from cold sweat. Water-resistance also means light rain and short sharp showers are easily dealt with. And inside, the full fleece interior feels great against the skin and further enhances insulation against the cold. Hard training means plenty of energy expenditure but the C5 Infinium sits snugly to the body, ensuring you’re not wasting energy in battling a loose-fitting garment as you push hard on the pedals. The cycling-specific cut extends to the dropped tail, providing extra coverage when you’re in a riding position. A high collar keeps cold breezes off the chest and elastic wrist covers give a smooth seal against the elements. Reflective logos and panels make this jacket perfect for those determined to keep road cycling even on cold, dark winter days.