It is air tight
The grinder part works fine but the cap on the top fell off. It is air tight so that's good.
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Product Description
Keep your herb, grinder, and grounds with you on the go with The Keeper™. Featuring 2 storage compartments for keeping flower and ground material separate, and a built-in removable grinder with sharp, durable teeth for a fluffy grind; the Keeper™ is the best 3-in-1 solution for preparing and storing your herb. As a bonus, the removable and flexible tether allows you to clip the Keeper™ wherever you need it; on your belt, bag, or even your keychain. Always have what you need on the go with the Keeper™.
Featured in the Rico Nasty Hemper box, read about it here.
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