This is a great design. Saves space. Easy to hold with one hand. Pours. Snaps tight. No, it's not 100% airtight. I filled mine with water, sealed it, turned it upside down, and was able to coax a drop of water from it. So if you need a seal that is absolutely, positively, bulletproof airtight, this is not the container for you. However, if you want a practical solution for rice, grains, cereal, spices, sugar, flour, etc. this is a winner. It pours, for crying out loud!