Applicable Machines: The Replacement Dust Bag compatible with for X40 Ultra/X30 Ultra/L40 Ultra/L10s Pro Ultra/L10s Ultra Gen2 Vacuum Cleaner. to check the model of your vacuum cleaner before making a purchase. Effective cleaning: The vacuum cleaner dust bags are advanced with a push-pull handle design, simply remove the full dust bag, without needing to touch dust when changing. Easy disposal without the cloud of dust. Maximum Capacity: for X40 Ultra dust bag with 3.2L capacity, each dust bags holds up to 70 days of debris (depending on how many times the sweeper sweeps and how much dust is in the home), the disposable bag replacement kit is designed to meet the long term replacement needs of 10-12 months. Pro tip: Replace the bag when it is 2/3 full for optimal performance. Efficient Performance: vacuum dust bag which can effectively filter 99.9% of fine dust and particles, reducing the amount of dust in the space, especially suitable for people who don't like to come into contact