Good for dog water or food bowl while hiking.
Hole for carabiner to attach to backpack etc.

Collapsible_Bowl is best printed with a 0.4mm nozzle.

Collapslble_Bowl_0_4_noz_thin is very light, but very flimsy.

Collapsible_Bowl_06_noz is to be printed with a 0.6mm nozzle.  Faster print, heavier and more stiff, more difficult to collapse.

Suggest:

Solid Print, no infill i.e. Perimeters and Solid Layers whould be enough that bottom is solid and walls are al perimeters.

Perimeter generator: Arachne