Upgraded stable structure: Compared to a regular PVC inflatable pool, this spa provides almost the same stability as a ceramic bathtub. After adding water or inflating and deflating multiple times, it can still maintain its original appearance and structure, making it less likely to shake during use, providing a better bathing experience. 50% Energy-saving insulation cover: Paired with 2 insulation covers (standard insulation cover and energy-saving insulation cover), the energy-saving insulation cover can provide up to 50% energy-saving and insulation effect, reduce electricity expenses, and provide higher and more stable bathing temperature 6-Person massage bathtub: The hot tub can accommodate up to 6-7 people, paired with 130 soothing massage nozzles, providing better soothing effects on the back and legs, with a heating temperature of up to 40° C. No additional accessories are required: 2 hot tub covers, 2 filter cartridges, 1 EVA insulated hot tub mat, SPA test strips, 2 PVC patches, 1 spanner, 1 inflation hose, 2 child safety keys, 1 power cable, 1 storage bag, 1 cup holder, 1 instruction manual 1-year after-sales quality assurance. You hardly need to purchase additional accessories. Easy to set up & use: The hot tub comes with a user-friendly inflatable design, making it easy to set up and use. The digital control panel allows you to easily control the water temperature, water jets, providing you with a personalized bathing experience.