Intex Pure Spa 4 Person Inflatable Portable Hot Tub with 6 Filter Cartridges Pamper yourself in relaxing heated water surrounded by soothing bubble jets PureSpa provides relaxation at the touch of a button for up to four people Easy to use control panel activates the 120 high powered bubble jets surrounding the interior of the spa for a refreshing massage Ready for water in about 20 minutes and can be deflated for easy storage or transport (pump included) Unlike other spas that have cold air bubbling through water during the heating process, the PureSpa heats the air prior to bubbling through the water which heats the water more effectively