Aspire Quad-Flex 4-in-1 is a game changer. Thinking outside of the box, the kit brings you totally different levels of vaping at your own pace. The Quad-Flex System provides the ultimate multi-device package, which completes four configurations of atomizer in one streamlined kit. From the refined flavor beast and those who enjoy traditional tight pulls, to vaping cloud chasers, the Quad-Flex covers all bases.