The North Face Base SUN Sleeve

"The Dipsea Sun arm warmers from The North Face are the ideal companion for anyone who enjoys outdoor activities, be it speed hiking, fitness & training, mountain biking or hiking. These arm warmers not only offer protection from the sun, but also an additional layer of warmth when temperatures drop. The breathable material ensures that the body temperature is effectively regulated by allowing air to escape through the material so that you don't overheat when temperatures rise."
"Thanks to the siliconegrip tape with branding on the sleeve openings, the arm warmers fit securely and comfortably without slipping. The reflective details and logo ensure that you remain clearly visible even in the dark. Another plus point is the recycled material, which not only ensures greater freedom of movement and comfort, but also helps to reduce waste and minimize the impact on nature. With the Dipsea Sun arm warmers, you can concentrate fully on your outdooradventure while protecting the environment."