Built-in hard water treatment system makes water gentler on skin, clothes and the entire spa system Ready for water in about 20-minutes and can be deflated for easy storage or transport Provides relaxation at the touch of a button for up to 6 people with the easy-to-use control panel Includes: Ground cloth, insulated cover, 2 head rests, carry bag, 2 filter cartridges, Attachable Cup Holder And Refreshment Tray Accessory (2 Pack) Lean your head back on the included headrests and enjoy the multi-colored LED light system