The most sophisticated computerized molds have been designed to eliminate all parting lines on the teeth and guarantee perfect symmetry between each tooth. The result is no snagging or dragging for the smoothest glide and maximum control demanded by top hairdressers. Only VIA offers revolutionary composition of silicone graphite resins for the sleekest, most perfect combs ever invented ... a combination so unique, a patent is pending. This combined with heat resistant Flextemp™ Carbon Fiber material keeps these combs flexible while making them able to withstand heat up to 400F. They are ideal for working with irons.