The DreamStation 2 reusable foam pollen filter by Philips Respironics is a white, synthetic reusable filter designed to remove larger particles like irritation dust and pollen from entering the CPAP machine, helping maintain clean and effective air delivery during therapy. These filters are genuine Respironics DreamStation 2 filters and are packaged in a carrier with a gray color. Pay by insurance? Please call (877) 799-0202.