There are three main types of portable Spas, inflatable, hard side, and fiberglass. Each of these spas has their own special features. An Inflatable Jacuzzi (בריכות ספא) is exactly what the name implies. You have a pump that blows the tub up, plug it in to a regular 110 outlet and then fill it with water from a regular garden hose. You can use this type of tub inside or out as long as you have an outlet handy and when not in use you can deflate the tub and store it away.
A Hard side portable hot tub either comes with a solid shell weighing around 75-80 pounds or little or more or else in pieces that you put together and then place the liner inside the frame, fill it up and plug it in. Some of these spa pools (ג׳קוזי) have a special addition that contains the heating element and controls.
A Fiber glass portable Jacuzzi (בריכות ספא) is more like the permanent models. They are usually slightly larger than a rectangle bath tub and fit easily through doorways. They normally can be used on floors with regular support, though it is wise to check with someone who can let you know just how much weight your floor is capable of bearing.