These are Medical Grade inhalers, just like the old Vicks Inhalers made with medical grade plastic which are heavier and with thcker walls. The end result is that essential oils in these inhalers will last much longer than the cheaper inhalers made in China.
Made in USA by a FDA registered medical device component manufacturer in a clean room environment.
Potable and easy to use, Just add your favorite essential oil or blends
The Cover and plug is a very tight fit to ensure that your essential oils do not evaporate. When Properly assembled, the essential oil will last very long as the seal is very tight.