Enjoy the Ultimate Spa Massage at Home! The 108 high-powered massage bubble jets soak sore muscles for a luxurious treat, and the circulating water filtration system can make you enjoy the clean and hygienic water all the time, which can effectively filter the sand, debris, and hair. If you are looking for an inflatable hot tub like this, do not hesitate to place an order! ● Ultimate Massage Bubbles and Water Filtration System: The inflatable hot tub spa is designed with 108 high-power massage bubble jets, creating smooth whirlpools for 360-degree comfort. Moreover, this lazy spa comes with a circulating water filtration system to keep your water clean and hygienic. (Notice: The filter cartridge needs to be replaced after usages of 150 h.) ● Heating Function: The outdoor and indoor round tub spa is equipped with a newly-upgraded 2240-Watt heater for providing superior and comfortable heating, and the water temperature ranges from 38 ℃ to 40 ℃. Besides, the heating rate is 2–3 ℃/ per ho