Hi,
I often need select the geometry inside shells when I deal with model that download from internet.
I find it is very difficult to make such selection.
Any way to select it easily?

Thanks!

Option 1: Select both sets of geometry then use the Control key and and double click on the outer shell to remove it from the selection.

Option 2: Select the outer shell and press tab>Visibility. This will hide the shell without deleting the geo - now you can work with the interior when you are finished you can either bypass or delete the Visibility node and the outer shell is restored.