Apollo Vaporizer Inc. is one of the best portable vaporizer manufacturer in USA. They offer Apollo AirVape XS, AirVape X and more dry herb portable vaporizer and pens. They comes with a smell proof X Shell and water resistant ability which as a result make them sturdy and easy to use. Their high quality portable dry vaporizers includes portable Airvape Om. Also, not to mention all their products comes with lifetime warranty.