Bundle includes the Intex PureSpa Plus 4 Person Portable Inflatable Hot Tub Bubble Jet Spa & a 3-pack of Intex PureSpa Type S1 Pool Filter Cartridges (6 total). Let your worries bubble away as you unwind in the total relaxation of the Intex PureSpa Plus 4-Person Inflatable Hot Tub Bubble Jet Spa. The PureSpa provides relaxation at the touch of a button for up to 4 people with its easy-to-use control panel that activates 140 high-powered bubble jets surrounding the interior of the spa for a refreshing massage. The heating system on this inflatable spa adjusts to fit your personal temperature preference, allowing for a stress-free spa experience. Pampering yourself has never been easier with the soothing high-powered jets that give you the ultimate spa experience. This particular PureSpa also features built-in LED lighting, headrests, and Fiber-Tech PVC construction that stands up to heavy use. Set up is easy and ready for water in just about 20 minutes. If you've always wanted a hot tub without permanently taking up space on your patio, this PureSpa Plus hot tub is a relaxation game-changer.29001E Keep your spa water clean and Intex PureSpa performing at its best by using genuine Intex PureSpa Type S1 Pool Filter Cartridges. This is the authentic replacement cartridge for your Intex PureSpa. It works with all Intex PureSpas models including 28403E, 28407E, 28443E, 28453E, 28421E, 28423E, 28413E, and 28453E. Replace your filter cartridges regularly for the best results. It is recommended that you replace cartridges every 2 weeks to maximize your spa's performance. Help ensure the longevity of your Intex PureSpa by regularly choosing Intex PureSpa Type S1 Pool Filter Cartridges.