The Tightvac Storage System is a unique patented vacuum seal closure system, which permits moisture to escape, keeping your goods dry & oxygen free. Minivacs are an excellent pocket & purse size storage for vitamins, homeopathic remedies, herbs, prescription drugs, cosmetics, jewelry & any misc. small items. Great for shuttle. Tightvacs save you money and guarantee fresher for longer food storage than other typical containers in the marketplace. The Tightvac’s easy to make use of system creates a vacuum seal simply by pushing the button at the lid as you close it/press again to open, simple! Use Tightvac storage containers to extend the shelf life of all of your dry goods; coffee, tea, cereal, flour, bread, herbs, and spices. Use all of our products; Tightvacs, Coffeevacs, Everythingvacs & Vitavacs for a multitude of household storage purposes, from small to huge, in a number of colors & styles. Hand wash only.