Sun Protection & Skin-Friendly: This bandana cap is made of 83% nylon + 17% spandex stretch fabric with a 7cm extended neck flap, providing full UV protection for the head and neck. Breathable & Comfortable: This bandana cap features a cracked mesh design, ensuring optimal breathability and sweat-wicking while blocking sunlight and dust, preventing sweat from dripping into eyes during outdoor activities. One-Size-Fits-Most:20.5-25.6 inches (52-65 cm) adjustable head circumference with elastic strap for secure non-slip fit during movement. Quick-Dry & Machine Washable: This do-rag is designed for easy care—machine washable and dries in just over an hour thanks to high-performance quick-dry fabric. Versatile Use: This bandana cap can be worn as a standalone bandana or as a helmet liner, ideal for running, cycling, hiking, motorcycling, and outdoor work, ensuring all-day comfort.