Yocan Evolve-C Vaporizer is a great vape pen best suitable for s and s. Included with the Evolve-C pen is one atomizer and one atomizer. The tank is built with quartz c technology, providing the purest experience of flavor. The atomizer is a top refill unit with no leakage design. The evolve-C vape pens contemporary usefulness is in its small and discreet design. Compact and portable, it is designed for stealth missions to vape on the run.