Made with Tru2Life® heat-friendly synthetic hair that can be flat-ironed, curled or blown out.You can curl it - use a curling iron set to a low-medium temperature. True2Life® fiber can withstand heat up to 350°F/180°C.You can straighten it - use a flat iron set at a low-medium temperature. True2Life® fiber can withstand heat up to 350°F/180°C.You can forget it - another advantage to True2Life® fiber is that it holds its style (curly or straight) regardless of the environment (rain, humidity).Basic cool, comfort cap construction on top with wide velvet Comfort Band in front to prevent frictionResilient stretch material throughout the cap base for a custom-like fit