MBO Wearable Air Conditioner — Personal Heat-Stress Cooling System A genuine compressor-driven wearable cooling unit — not an evaporative fan-vest — designed for personnel working in high-ambient-temperature environments where sustained physical exertion and heavy PPE make heat stress a real operational and safety risk. Key Features Compact refrigerant-based cooling system worn as a lightweight vest unit (~3 kg) Adjustable output temperature range: 16–25°C Continuous cooling runtime of approximately 3 hours per charge Rechargeable, portable — no fixed power source required Suited for use under coveralls, hazmat suits, or standard PPE Application Purpose-built for outdoor and high-heat industrial roles — pipeline and coating crews, rig operators, site inspectors, security personnel, and maintenance electricians — where continuous cooling directly supports compliance with heat-stress management practices during peak summer operating hours.