This food storage container arrived deconstructed with the small box in the larger box and the wheels in a separate baggy but was super easy to assemble! Took less than 2 minutes as you just have to pop the wheels in. We washed it before putting food in it but it didn't have a strong plastic smell or anything like that. The wheels don't really roll, they drag unless you apply pressure on the container as you push. This isn't really a problem as ours will stay in one place but the wheels are a nice touch. We got our pet's name in a vinyl decal which was the perfect touch!