Made of high quality polyester microfiber, very thin to the skin, stretchy, decidedly soft and comfortable to wear, durable and breathable, sweat-absorbent and flash-drying, comfortable to wear, keep your head dry. Inner lining has tiny air permeable holes, increase breathability and absorb sweat; Classic pirate bandana, stylish and lightweight, UV sun protection in summer and warm warm in winter. Excellent flat seams with classic solid color design, easy to use with different styles of clothes, worth it. Perfect beanie for sports like basketball, football, volleyball and others . It can keep you cool and comfortable while you enjoy activities. This head breathes well, to keep sweat out of your eyes. Non-slip, odor-resistant organic cotton allows you to effortlessly look good without worrying about your hair during your sports activities. Adjustable back tie for a better fit for the head circumference of the most people. This design can also solve the problem of the cap coming off easily. You can enjoy outdoor sports without any apprehension. Use the tied knot to adjust the tightness, easy to put on or take off. Ideal for all outdoor activities. Can only wear cycling, hiking, climbing, running, mountain biking, motorcycling, riding, boating, backpacking, windproof cap, UV protection cap in summer and winter. spring, but also can under the motorcycle helmet liner in winter keep warm.