D1 has studied human anatomy, ergononmics, fluid mechanics, aquatic massage, acupressure, and reflexology so extensively we actually invented a new science; we call it "hydronomics." Using state-of-the-art modeling software, D1 engineers design our hot tubs in virtual space, which ensures the ultimate in comfort.

The culmination of hydronomics can be experienced in our BioForm Seating.

The first and only height-adjustable neck jet pillow.

• Patented design provides the ultimate in comfort
• 5 height positions allows for a wide range of users
• Curved pillow cradles your neck
• Up to 4 adjustable jets; water volume and nozzle angle

• No-float design
• Sculpted leg contours for superior fit
• Tactile Therapy for wrists and hands

Raised bumps provide acupressure massage.

• Allows interactive therapy
• Stimulates trigger points in arms, wrists, and feet
• Helps to disperse  lactic acid build-up in muscles