Create a hyper-realistic black designer puffer coat as a Roblox classic shirt template. Use the traditional 2D classic layout (torso front, back, sides, and both arms). The jacket should have deep padded sections, glossy realistic nylon texture, premium stitching, metallic zipper detail, and luxury designer-style proportions. No text or logos anywhere. Keep the shading dramatic with strong highlights and natural shadows to enhance realism. Maintain the exact proportions and layout of a Roblox