I used 0.3mm layers in olive green PLA+ with no supports, a 5 layer internal brim only, and 3% lightning infill for the hat.
I used TPU at 0.2mm layers in bright green for the hat band with no supports.
I used yellow PLA+ with organic supports (printing sideways) for the buckle.
Use pliers to work the TPU band into the buckle - the TPU band will only go over the hat appropriately in one direction.
The author marked this model as their own original creation.