Manufactured exclusively from Dupont Delrin® acetal polymer — a 100% professional thermal material. Dupont Delrin® withstands extreme heats; is virtually static free; is virtually chemically inert (will not absorb sterilizing solutions, perms, conditioners, shampoos, oils, water, etc., and can be wet or dry sterilized); with its ultra glossy, smooth-as-silk surface, glides with “flow-through” combing, never dragging or tangling. Dupont Delrin® perfectly blends strength and flexibility to be absolutely guaranteed. Dupont Delrin® - the quality alternative to hard rubber.