1Fitment: Filter purifying accessories are fit for Nispira Pure enrichment Purezone mini air purifiers, replacement filters provide a perfect fit for improved air quality. 2Double Layer Filtration: Dual filters provide a highly efficient cleaning and purification process, removing air pollutants, allergens, and particles and so on. 3Easy Replacement: Compact size and lightweight design of the air purifying filter makes them easy to carry, and the filters can be easily replaced without any hassle. 4Long Lasting: Filters are constructed with durable materials and are tested multiple times to ensure their longevity. Each filter can last up to 6 months depending on usage and air quality conditions. 5Filtration: Filter purifying accessories are equipped with high efficiency particulate air filters, ensuring that your air is effectively purified and free of harmful particles.