No matter what your speed is on the trail, whether you're out for a lazy day hike or you're putting in work training for your next ultramarathon, the Mammut Sertig Cap will keep your head shaded and cool on summer days in the mountains. It's made with a breathable and quick-drying polyester mesh that provides cooling airflow as you move down the trail, and boasts an ultralight weight that'll make it no hassle to bring along on even the most ounce-counting backpacking trips.