This Karl Training head from Sibel comes with hair that is between 12-14 inches in length. It is 100% natural hair and has a moustache and beard. Medium density: 230-260 hair per square cm. All Sibel hair has been chemically bathed and disinfected to ensure optimum safeguards. Training heads are also available in varying hair thicknesses; Fine, Medium, Super, Maxi, and Extra Maxi Density. Student hair stylists can therefore practice their techniques on various hair types.