To play its part in the protection of human health and the environment, the next-generation tubing does not contain phthalate plasticizers. The Classic III stethoscope is made for consistent quality. It comes complete with large and small soft-sealing eartips, non-chill bell sleeve, and instructions. Two-sided chestpiece with tunable diaphragms on both the adult and pediatric sides. Single-piece tunable diaphragm is easy to attach, and easier to clean because its surface is smooth without crevices. Pediatric side converts to a traditional open bell by replacing the single-piece diaphragm with a non-chill rim.