The Jet Pack is a high-tech, retro-futuristic propulsion device designed for vertical and horizontal mobility. It features a bulky, metallic frame with a combination of polished and weathered surfaces, showcasing its post-apocalyptic origins. The pack includes intricate piping and vents for propulsion, with a central thruster that emits a faint blue glow, indicating its power source. The color scheme is primarily muted metallic tones with occasional rust and wear marks, emphasizing its rugged functionality in a harsh environment.