Material and hair length: 29.5 inches (from forehead to back hair). Our manaquine hair is made of synthetic fiber, which is very smooth and of high quality. They are also much cheaper than real hair and have various functions: this manikin hair practice head can be used by hairdressers, stylists, beauticians, barbers, hairdressers, hair salons and students in beauty schools as educational supplies for both men and women. This hairstyle design head is suitable for washing, cutting, knitting, straightening, styling, DIY hair, etc., but it can not be dyed, bleached and makeup. Note: If you want to flatten/curl, it is recommended that the temperature should not exceed 150 degrees, and each time should not exceed 15 seconds, which is convenient for cleaning: the trained model head can be washed with mild shampoo, which is very easy to clean and use,