Bests & Worsts Reviews from Amazon

I've had this for about four months now and it's not airtight anymore. It's not a make it or break it deal for me, it still serves it's purpose as a container with a lid and I like the wheels but it is no longer airtight...thought that might matter to someone. The reason being they use a soft foam material as the seal and it is smaller than the crease it molds into so the foam gets pushed into the crease and no longer sticks out enough to create the seal with the bottom edge of container, maybe if rubber would've been used instead then that wouldn't happen?... Hard to explain in text, hope that makes sense.