Artesian Platinum Elite and Island spas feature a revolutionary breakthrough in hydrotherapy jetting that makes use of the timeless concept of a helix; a curve in three-dimensional space such as that found in a spiral staircase. This Artesian Spas patented jet design provides a truly remarkable hydro-massage. Engineered with the concept of the double helix in mind, the jets use a right-directional spiral on the inside of the cylinder. This causes water to spiral out in a twisting motion, providing jet pulsation and heightened massage pressure.