Bontrager Visibility Thermal Arm Warmers are designed to make you more visible & keep your arms warm at the same time. The thermal material traps body heat & wicks moisture away from your skin to give you more comfortable rides in cold weather. Thermal Arm Warmers are really useful in the spring & autumn, or on chilly mornings. We often wear them with a standard short sleeve cycling jersey & a gilet on rides where it is not quite cold enough for a full jacket. The Thermal Arm warmers will keep the chill off & if you get too warm they can easily be removed & stashed in a rear pocket. These high visibilty yellow versions have the added benefit of making you stand out more to other road users. Features Profila Thermal fabric traps body heat & wicks moisture, keeping you warm & dry Anatomic left & right design Soft, custom jacquard gripper with silicone print allows for a stay-put fit Reflective elements add contrast to enhance nighttime visibility Fitted cut provides streamlined body fit for enhanced performance