Coffeevac"s have a unique patented vacuum seal closure system, which allows the carbon dioxide from the beans to escape, while keeping your coffee moisture and oxygen free. Coffeevac"s save you money and guarantee smooth rich coffee flavor for longer. Solid and tinted Coffeevacs protect light sensitive beans and tealeaves. The Tightvac"s easy to use system creates a vacuum seal simply by pushing the button on the lid as you close it/press again to open, simple! Use Tightvac storage containers to increase the shelf life of all your dry goods - coffee, tea, cereal, flour, bread, herbs, spices. Use all of our products; Tightvacs, Coffeevacs, EverythingVacs and Vitavacs for a multitude of household storage purposes, from small to large, in a variety of colors and styles. Handwash only.