ProgressivePrepworks International DKS-200 Brown Sugar Keeper (set of 2)

Is this container Airtight? Other brands list Airtight in the description.

What is the container made of? glass or plastic? it says bpa-free but can't tell if that's just the lid or the whole thing.

what color is the top?

Does this container have the built-in leveler? In the picture it does but the description it doesn't say.