For their Thermo Lines Long Sleeve Jersey Altura use a brushed thermal fabric that helps retain warmth, creating a cosy air barrier against the cold. However, the fabric is also highly breathable and with some air-permeability, you'll find sweat is quickly removed from the skin and evaporates away before it can rob you of body heat. Altura gives the Thermo Lines Jersey a semi-fitted cut making it sleek through the air and reducing excess fabric that can slow you down and waste your energy. Read more… An integrated silicone hem grip keeps the jersey snugly in place and improves the fit. Three rear pockets keep essentials within easy reach, with a fourth zipped pocket for valuables. Reflective panels on the back add visibility on all your late evening or early morning rides when light levels are low. For the cooler temperatures of autumn and spring, this thermal jersey excels, with a great balance of warmth and breathability. As temperatures drop it makes a great layer under a winter jacket too.