Features : The skull cap is made of 90% polyester and 10% spandex blend,soft, breathable, skin-friendly, lightweight and elastic,keeping your dry and comfortable. Excellent Thermal Retention and Performance Moisture Wicking:Wicks moisture and dries quickly, keep you warm on the cold weather and keep you cold on the hot weather. One size fits most : skull cap can be stretched easily,suitable for man and woman. Washing instructions: washed by hand or machine in cold water, hang dry, no need dehydration.