PERFECT FIT - Compatible for Irobot J7+ Combo, easy install. HIGHLY EFFICIENT FILTERING TECHNOLOGY - premium quality rubber brushes are perfectly matched, one for peeling off dirt and the other for sweeping dirt. The side brush reaches deep into corners and edges to remove more dirt, dust and debris. The cleaning filter blocks of pollen, dirt, dust, pet dander and other particles as small as 0.3 microns in size. Strong Water Absorption: High temperature resistance, no fading, no lint, easy drying, durable EASY TO CLEAN AND REPLACE -Clean by hand washing in warm water and let it completely air dry before reusing them. Regularly clean replacements parts to improve suction and perford extendsmance an the life of your . For results, edge-sweeping brushes and filters should be replaced every 2 - 3 months.Multi-surface rubber brushes should be replaced every 6 months. for iRobot Roomba Combo J7+ Material: plastic colour: As shown Package Contents: 1 set roller brushes 4 x filters 4 x rag 6 x dust collection bags 4 x side brushes 2 x cleaning tools Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.