Let your worries bubble away as you unwind in the Intex PureSpa Plus Portable Inflatable Hot Tub Jet Spa with 12 Filter Cartridges. The PureSpa provides relaxation at the touch of a button for up to 6 people with its easy-to-use control panel that activates 170 high-powered bubble jets surrounding the interior of the spa for a refreshing massage. The heating system adjusts to fit your personal temperature preference, allowing for a stress-free spa experience. The package includes a tub, insulated cover, heating/filtration/air blower/hard water system, color-changing LED light, 2 filter cartridges, 2 headrests, thermal ground cloth, inflation hose, carry bag, floating chlorine dispenser, and test strip. This bundle comes with 12 filter replacements 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 performance. Relax and unwind with the Intex PureSpa Plus Portable Inflatable Hot Tub Jet Spa with 12 Filter Cartridges.