Material and Breathability: Doo rags for cycling are typically made from lightweight, breathable moisture-wicking polyester, which help keep the head cool and dry by allowing sweat to evaporate quickly. Helmet Compatibility: Cycling doo rags are thin and lightweight, making them suitable for wearing under helmets. They provide an additional layer of comfort and help prevent sweat from dripping into the eyes without adding bulk. Adjustable & Stretch: The bandana do rag caps have adjustable straps, you can tie the cap as tight as you are comfortable with, with good elasticity, one size fit most, you can be stretched to fit your head well, and won't fall off. Ideal For Outdoor Activities: Our dew rags for men can be widely applied for various outdoor activities, such as cycling, running, jogging, climbing, fitness, motorcycling, traveling, shopping and so on, and nice for using alone or as helmet line. What You Get: You will get 6 doo rags in 6 colors, which give you a variety of choices to meet your daily wearing needs, also convenient to change and wash in daily life, even sharing with friends. do rag skull cap helmet liner