1. Side brushes are easy to remove and replace as part of routine maintenance. It is made of high-strength and environment-friendly material, durable in use.2. Main brush keeps your home robot operating at peak performance.3. The Filter is washable. It maintain robot's cleaning performance while reducing infiltration of dust, pollen and other allergens into the air you breathe.4. For best results, spare parts should be replaced every 2 - 3 months.5. Applicable model : for cloud whale J1Material:plasticcolour:White + grayPackage Contents:1 x rag1 x side brush1 x filterOnly the above package content, other products are not included.Note: Light shooting 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.