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After a week of use, my espresso grounds still smell incredibly fresh when I open the container. The vacuum seal is tight and easy to engage with a few pumps.

The pump mechanism is satisfyingly solid and creates a strong seal—I can actually hear the air being sucked out. My pre-ground coffee still smells fresh a week later, which never happened with my old clip-top jar.

I was skeptical about how much difference the vacuum seal would make, but after three weeks my espresso beans still smell like the day I opened the bag. The pump mechanism clicks into place satisfyingly and creates a tight seal with minimal effort.