PureAura is an original humanitarian air purifier engineered for extreme micro-housing, such as Hong Kong's 120,000 subdivided units. Addressing severe respiratory risks in which appliances are bulky and costly, PureAura champions "subtractive design"—eliminating nonessential electronics to focus purely on high-efficiency filtration. Its foldable PP pleated chassis and elastic cord system enable zero floor space via wall mounting or multi-directional airflow (flat, 15° tilt, vertical). Powered via USB-A (40h on 10,000mAh), it delivers accessible, dignified clean air as a universal human right.