If you aren't yet convinced about the greatness that is reusable Tiffin Carrier lunch boxes, watch this video demonstrating how to pack and seal your tiffin. You'll also see just how leak-proof one of these stainless steel containers is.

In other words, perfect for you or your energetic child who swings their lunch kit wildly on the way to catch the bus or is prone to spills.

This video was made by the folks at Happy Tiffin, who produce two-, three-, and four-tier tiffins in a variety of sizes, as well as the very cool pyramid tiffins, which feature as many as six - yes, count'em, six! - tiers. The pyramids even feature plates built into the containers for your convenience.

Check out Happy Tiffin after the jump, but be sure to watch the video first!

» Happy Tiffin (Official Site)