Good Sealing:The dust bag is made of melt-blown fabric and non-woven fabric, combined with the cleaning station can effectively capture 99.7% of ultra-fine dust down to 0.3 tiny particles. Auto Lock: It lock automatically when you lift the dust bag, completely sealing the dust bag inlet to dust and dirt stay inside the bag. Tips for Use:In order to keep your robot running at its best, please clean and replace parts in time. If you have allergies and pets , it is recommended to replace the dust bag every 2-3 weeks. Excellent Performance: Our mop pads can effective clean stubborn stains on the floor including dirt, water stains, juice residues and other sticky debris, suitable for floor types of wood, carpet or tiles. The corner brush can get deep in to corners and snug against walls and baseboard to an excellent clean area. The mop cloth has good softness, while cleaning the dirt, it also protects the floor from being scratched. Applicable Models for X10+ / X20+ / X20 Max / X20 Pro for M30S / M40 for L10 ultra / L20 ultra / L30 Ultra / L10s Ultra Color: As Shown Material: Non-Woven Fabric + Microfiber Package Contents: 4*Dust Bag 4*Mop Cloth 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.