DuoClean PowerFins: A PowerFin roller and a soft roller combine on all floors. Continuous cleaning contact to dig deep into carpets, directly engage floors, and pick up more in every pass. (vs. original DuoClean) Self-cleaning brushroll for powerful pet hair pickup with no hair wrap. Engineered to pick up more hair with no hair wrap (vs. shark bristle nozzles) Lift-Away the detachable pod with the easy-to-use pod-release pedal to clean stairs, furniture, and everywhere in your home. Anti-Allergen Complete Seal Technology and a HEPA filter trap 99.9% of dust and allergens inside the vacuum cleaner. (Based on ASTM F1977 of particles .3 microns or larger.) A lighter pod than Shark's best-selling Lift-Away, with more suction for versatile whole-home cleaning. (weight and suction vs. NV351, suction measured at the hose.) Powerful LED headlights on the nozzle reveal hidden debris around your home. Advanced Swivel Steering lets you easily maneuver your vacuum in and out of tight spaces, in corners, around furniture, and more. Includes tools to tackle stubborn pet hair and hard-to-reach spaces. Includes: Crevice Tool, Pet Multi-Tool, Self-Cleaning Pet Power Brush This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.