Pupil Backpack

One pupil backpack 0.3x0.2m with straps, a front pocket and a hanging loop, with a state knob for standing stuffed on the floor, slumped empty and hung by its loop so it clones onto a peg rail.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit