1Suitable for all seasons, providing shade when running fast, marathon, and enjoying outdoor activities. 2Just pass the hair through the slot and adjust to the desired style, even suitable for men's bun. 3The back mesh design makes it more breathable and cool when the weather is hot. 4Can also be used as a decorative item to match your sports and casual clothes. 5Portable and lightweight design, can be folded into a bag, does not take up space.