Having problem modeling this lunchbox :(
I mean that it can be done in less steps.
Your model at this moment has 14 elements, but can be done with 8 elements
Don't see that it write 11 elements, because it also count axles (they are from template, but you can delete them, if they not needed for you)
Make sketch with 'Offset Entities' (because you will add 'Shell', so why not make it in 1st sketch) and 'Revolve' it.
Next time you may not use 'Loft' because we have better command named 'Rib'
'Fillet' as it was before..
'Shell' as it was before..
And the last step 'Extrude-Thin', but now I didn't make new Plane, just extruded it in 2 ways from the bottom surface of box.
Every time you start new project - Remember! - If simple models are not particularly important the number of elements and constructs, in complex models will be very important to have less elements, because it will save your time and resources.
Good luck! =)