Self-locking collar snaps shut the moment it is removed from the vacuum, ensuring that dust and dirt are never released back into the air once they're captured These dust bag trap 99.97% fine dust, dirt, and trash greatly, preventing them from recirculating into the air of your home, also improving you vacuum performance that are highly durable and build to use longer than a standard paper vacuum bag These replacement dust bags and filters are designed to fit for Vacuum S241 - S256i, S290 - S291, S300i - S399, S500 - S578, S700 - S758, S4000, S6000, Compact C1, C2, Complete C1 Compatible with: Fits Canisters Vacuum models S241 - S256, S290 - S291, S300i - S399, S500 - S578, S700- S758, S4000 - S4999, S6000 - S6999, S4, S6, Compact C1, C2, Complete C1 Replaces Part # 10123220 Regularly replacing vacuum bags & filters will enhance the overall performance of your vacuum cleaner, it's recommended to replace them every 2-3 months or depend on your usage. The steps of changing your vacuum bag: 1.Lift the release button and open the dust compartment lid upwards until it clicks into place. 2.Grasp the self-locking collar and remove the vacuum bag from the holder. 3.Insert the new dust bag into the blue holder as far as possible, and do not deploy the bag when removing it. 4.Unfold the dust bag in the dust compartment when possible. 5.Finally, close the dust compartment lid until it clicks into place, be careful not to catch the bag in the lid. colour:White + red Material:Non-woven fabric size:Bag size: 27 x 16.8cm Package Contents: 10* dust bags 10* motor filters 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.