iRobot Roomba S Series Replenishment KitAbout this item: Roomba s series replenishment kit. Includes 3 filters, 3 corner brushes, 1 set of Multi Surface rubber brushes. The high efficiency filter is made from a special material that captures 99% of mold, pollen, and dust mite allergens. The corner brush is specially designed at a 26 degree angle, using five 30mm brushes to clean deep into corners and along wall Edges. The wide dual rubber brushes clean large areas efficiently and work