Hot on the heels of the E cig comes a new development in vaping technology: the E joint. Disposable, discreet, and loaded with twice as much THC as a standard marijuana cigarette, the JuJu Joint is quickly gaining popularity in Washington, and its inventor, Rick Stevens, plans to debut the product in other states where marijuana is legal for recreational use, such as Oregon and Colorado.

E cigarettes and other vaporizing products typically use a rechargeable battery and a button activated heating system to produce the inhalant, but an E joint requires no recharging, refilling, or assembly. It is ready to use right out of the box, and all you have to do is take a drag to get your vapor. When you’re done, you simply throw the plastic joint away (the company is working on a recycling program).

Like E cigs, E joints have their supporters and detractors. Proponents of the product say that it is a safe, efficient high, with none of the carcinogens that are present when marijuana is smoked, and that the dosage is more controllable in vapor form. There is also no smoke, ash, or odor. The medical benefits of marijuana have been well documented at this point, and the E joint provides a convenient delivery system for patients with cancer, glaucoma, or multiple sclerosis.

However, the jury is still out on just how healthy the E joint actually is. Like most E cigs, the JuJu Joint contains propylene glycol, an organic, nearly odorless compound with a touch of sweetness. While the compound has been shown to be safe to be taken orally as a solvent in many pharmaceuticals, its inhalation has been linked to the development of disorders in children, including asthma, hay fever, and eczema. The use of vapor pens among teenagers is already a concern among parents and law enforcement officials. According to a study by the University of Michigan, 2014 was the first year more teenagers used E cigarettes than conventional ones. Kids can easily disguise a cannabis habit by using E joints, and THC has been shown to adversely affect developing brains. Cannabis use can sometimes lead to a nicotine habit, or the use of harder drugs.

The JuJu Joint retails for around $25 for medical use, and between $50 and $150 otherwise, because of a hefty tax imposed on distribution and sale of recreational marijuana products. It comes preloaded with around 150 puffs, and Stevens says it takes about 3 grams of high quality marijuana to produce each JuJu Joint.

Customers have responded favorably to the JuJu Joint. Since its debut in April 2014, about 35,000 units have been sold. Whether the E joint is safe or not remains to be seen, but its presence in the rapidly growing marijuana market seems assured.