These carts deliver the best vaping experience on the market. The new cartridges are made from quartz glass, stainless steel, and ceramic mouthpiece. We only use distillate and all natural terpenes unlike most companies we don't use any propylene glycol, vegetable glycerin, polyethylene glycol or coconut oil. With these cartridges you won't ever have to worry about your cartridge leaking. Your last puff will be just as great and flavorful as your first.