The Sibel Jennie Training Head is made from 100% natural hair in a chestnut colour. Medium density: 230-260 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.