The portable air purifier is only 1.5 oz, you could wear it easily anywhere you go, let you always enjoy breathing the safe and clean air and the lanyard is adjustable, available for kids, adults, and elders
air purifier adopts negative ion generator technology, no need filter, without HEPA filter consumables, no worry about HEPA replacement


Wearable Air Purifier Necklace with Gears of Negative Ions - Maximum Allergen, Smoke, PM 2.5, Pollen and Dust Protection to Protect Against Allergens, Smoke, PM 2.5, Pollen & Dust - Air Purifier for All Ages!