3d origami model

Create a realistic 3D CAD-style model of a foldable origami delivery bag made from a single continuous sheet. Expanded internal dimensions must be exactly 150 mm × 150 mm × 150 mm. Use a hybrid Miura-Ori and Waterbomb fold pattern with reinforced creases, self-locking corners, and structural ribs for strength. The bag should collapse nearly flat when folded and expand into a stable cube when opened. Design for a 5 kg load capacity using efficient load-distribution geometry. Include realistic fold lines, hinge regions, corner reinforcements, and manufacturable sheet geometry. Material appearance should resemble matte polypropylene sheet (1 mm thick). Model must be watertight, clean hard-surface geometry, engineering-grade proportions, accurate dimensions, production-ready design, no handles, no branding, no text, no background objects. Show both folded and expanded states. Focus on mechanical functionality, structural stability, repeatable folding motion, and realistic origami engineeri