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. It will lock automatically when you lift the dust bag, completely sealing the dust bag inlet to ensure dust and dirt stay inside the bag. In order to keep your robot running at its best, please clean and replace parts in time. If you have allergies and pets at home, it is recommended to replace the dust bag every 2-3 weeks. Large capacity: The dust bag has a large holding space, which can collect more dust and reduce the cleaning frequency. Easy to replace: dust bag design is simple and easy to use, easy to replace, no special tools or professional skills are required. Compatible Models: For Henry Numatic Quick Models: Hen.100, NQ100, HET.100 Product Weight: 30.5g Dimensions: 12x12x19cm Colour:White Material:Non-woven fabrics Package Contents: 10 x Dust Bags 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.