Stretch - The beanie is stretchable enough to stay on the head and keep hair flat. It's smooth, ultra-thin, and lightweight, making it a sleeping cap. Lightweight - In the evening or in windy, cold weather, the thin beanie is good enough to keep the head warm but not too hot. For people with bald or short hair, sometimes when walking or running, you may even forget that you are wearing this thin beanie. Sweat Absorbent - For those who often wear bike helmets, motorcycle helmet or hard hat, it is recommended to wear this soft helmet liner. Relieve moments of heat, itching and sweating Durability - The skull caps are multi-purpose, used as slouchy beanie or running beanie. Pack of 2, you can share the beanies with family and friends, or wear one hat while the other one hats are being washed. Keep the color and shape after multiple washings. Comfortable - Everyone have sweaty moments. The skull beanie can prevent you from catching a cold or getting sunburn. Breathable, suitable for spring, summer, autumn and winter