PREMIUM QUALITY MATERIAL - Made of high-strength and environmentally friendly materials to ensure optimal performance and a healthier lifestyle.This is a good helper to keep your house truly clean and improve the air quality of your family. HIGHLY EFFICIENT FILTERING TECHNOLOGY - Two 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 and debris. The cleaning filter blocks 99.97% of dirt, pet dander and other particles as small as 0.3 microns in size If the side brushes bent due to shipping, recover them by simply soaking with hot water for a while. 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 performance and extends the life of your robot vacuum. For best results, edge-sweeping brushes and filters should be replaced every 2 - 3 months.Multi-surface brushes should be replaced every 6 months. Material:plastic colour:Photo Color Package Contents: 4 * roller brush 10 dust bag 8 * filter 8 * side brush 2 * cleaning tool Only the above package content, other products are not included. Note: Light 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.