xc spa outdoor spa is a large home-made or manufactured spa or small pool full of heated water and used for soaking, relaxation, massage, or hydrotherapy. In most cases, they have jets for massage purposes. Outdoor spa provides your home therapy spa and help you reduce stress and relax. Outdoor spa is equipped with high-tech and stainless steel jets and spa locates outdoor for enjoying natural scene and family swimming.Outdoor spa therapy is both physical and mental. An outdoor spa will be extremely heavy when it is filled with water, so you must prepare a solid base to support it. You can use a variety of materials--from concrete to railroad ties to patio blocks--but the base must be flat, level and stable.