Grenco Science makes a wide variety of high end vaporizer products, designed to be quite durable and sleek. Grenco Science has found several flaws in other brands designs and has made their own superior versions, such as the G Pen Roams Spill proof technology, the G Pen Connects small and portability unseen before by other E-nails, and the list goes on. They often team up with popular brands such as Lemonade, Cookies, Tyson and Dr Greenthumb. There are several other popular G Pen vaporizers including the Elite, Micro, Dash, Hyer and more!