Chemical masks come in half-face and full-face designs. An example of a half-face mask is the H.R.S.02 model. This mask features a direct cartridge attachment mechanism that reduces the need for replacing faulty parts and minimizes repair frequency. It is very comfortable and durable, made from soft, non-allergenic silicone that is easy to clean and has a long lifespan. Its ergonomic design ensures it fits comfortably on sensitive areas of the face, distributing the weight of the filter and mask evenly across the face. Additionally, the edges of this mask are turned inward to prevent any pressure on the wearer, providing the best fit on the face.