The Evolv-C vape pen from Yocan is specifically designed for thick oils and waxes. The Evolv-C includes both an oil cartridge, and a concentrate atomizer. The oil cartridge features a silica wick and the concentrate atomizer features a quartz wick, so you'll never get a burnt nasty hit. The Evolv-C is designed to be compact, efficient, and operate on low wattage to provide the cleanest flavor possible. The 650mAh battery charges off Micro USB for maximum convince and the kit includes a protective metal sleeve.