Air is our Passion EVA was created from a Swedish desire to bring clean air to the modern world. A group of highly specialised engineers work tirelessly to create inspired designs that have a low carbon footprint. High Density Activated Carbon Filters EVA filters only use high density activated carbon, the material that is vital to ensuring the filters last a long time whilst always working at full capacity. This makes them up to 90% more efficient at removing VOC's and toxic gases such as those given off by cleaning products. Protection You Can Trust These filters will remove 99.97% of pollen, mould, smoke, pet dander, dust mites, VOC's and toxic gases along with 99.95% of airborne bacteria and viruses. Always Designed to be Long Life This pack contains everything you need when replacing your EVA Alto one filter. The filter is an all in one high density activated carbon, antibacterial and true HEPA. EVA design all of their filters to be long life so they will last for a whole year.