Perfect Mid-Layer Warmth In order to give the best cold weather performance you will find Altura Thermo™ technology- this uses thermosuede fabrics to deliver body warming insulation and warmth, maintaining core thermoregulation, keeping you warm, dry and comfortable. In order to raise your visibility in low light and darkness Altura add strategically located retroreflective trims. For this jersey Altura use their ErgoFit™ 3D patterning, designed to offer you a garment that fits just right when in a riding position. Read more… The fit is of their 'Sport fit' range designed to offer a comfortable fit for all types of riders. To finish off the jersey you have three rear pockets, enough for ride essentials such as tube, tyre levers, nutrition and multi tool. There is also an additional zippered pocket to stash money, keys, credit card etc. .