This hot tub is sturdy and can be installed inside or outside, depending on your preferences. The inflatable part is made from rhino-tech 6-layer laminated PVC, which greatly reduces the risk of puncture. The filtration system is integrated into the wall of the spa, which has both aesthetic and space-saving benefits! To ensure quality and longevity, our filters are not made of paper but of polypropylene and are 100% recyclable. Moreover, an alert warns you when it is time to clean or change them. As for the heating system, it is made of ceramic lined with aluminium insulated with a layer of polyamide. In addition, the spa is equipped with the time delay function that allows you to delay the heating of the water for up to 99 hours, letting you pre-program the healing process so it's ready for you when you get home! Waterproof wired remote control with timer function. This spa is easy to use. The temperature, start-up, delayed heating and other functions are controlled with the waterproof wired remote control. Inflation is done by an integrated system. Simply plug in the spa, turn on the inflation mode and press a button on the remote control - it's that simple! Installation is easy and requires no tools. Within 10 minutes, the spa is installed and ready to be filled. A drain system with hose adapter will allow you to drain your spa cleanly and effortlessly. The floor mat and thermal cover are connected with safety clips with adjustable tightening to prevent accidents and retain heat.