Disposable vape systems:are the easiest devices on the market, Each disposable vape comes 100% ready to go, straight out of the box. With these devices, you don't have to worry about refilling your juice, charging the device, or literally anything else. Just use the e-cigarette until it runs out of juice. Once the juice is gone, the device is done with – just toss it out and pick up a new one! It really can't be any simpler than that.