The lid of this case lifts up and swings to the side to give you access to your eyeglasses. The lid has a small ball-detent catch to keep it closed securely.  The inside dimensions are 46mm x 30.5mm x 146mm long.

The lid and case both print in the orientations provided and without any supports. I would recommend PLA, as it is stiffer than most to of the other common filaments. After printing, the arms of the lid simply flex apart slightly to snap over the round nubs on either side of the case.