The Uwell Valyrian Atomizer Heads feature a quad-coil configuration, enabling it to manufacture plumes of vapor. The wicks are made with 100% pure Japanese organic cotton, which are wholly devoid of contaminants and impurities, such as bleach, pesticides, fungicides, and colorants. This, in turn, allows the coils to deliver a noticeably cleaner, purer, and truer taste from your e-juices.