The SIXS Carbon Underwear® long sleeve stand-up collar jersey with zip is breathable and thermoregulating in all conditions. The long sleeves completely envelop the arms, keep the skin fresh and lie between the skin and the overgarment. At the same time, they easily protect against cold draughts when a short sleeve version is worn over the shirt. The contrasting stand-up collar, which can be opened via the practical zipper at the front, also protects the neck from sudden changes in temperature and drafts. Features Seamless technology Antistatic system