robotic helmet 3d model

Wearable futuristic sci-fi adult face mask / helmet only. Designed to fit on a human adult face, wearable proportions. Hollow inside with enough space for nose, mouth and face. Uniform wall thickness 2–3 mm. Open eye holes for visibility. Open mouth and ventilation holes for breathing. No filled face, no solid human head inside. Only mask / helmet, no body, no neck. Aggressive, dangerous, intimidating look. Cyberpunk / dark sci-fi style with sharp angles, mechanical details, vents, spikes. Hard surface model, clean topology. Symmetrical design. Optimized for 3D printing, STL-ready. Do not generate a human face inside the mask. Mask must be empty from inside and wearable. Side strap holes included near temples.