Yügen Deep and Mysterious. Tap into your universal awareness. Buttonless design, no assembly, and no charging make these pens the ideal choice for easy, on-the-go usage. Filled with our Maximum Strength 1-to-1 CBD/THC e-liquid blend, each disposable pen contains premium extracts, and will last about 150 – 200 puffs. We recommend you begin with small pulls and slowly work your way to bigger pulls to insure it works to its maximum potential.