Dirt Devil UD40235 Ultra Swivel Glide Bagless Vacuum Patented swivel casters provide effortless turning and give you more stability. This lightweight upright comes with MicroFresh filtration to trap 99 percent of dust and allergens in your home. Bagless technology means you will never have to buy another bag again. A long 25 ft power cord gives you the reach you need to clean every room in your house, and five position height settings let you clean carpet and hard floors.