Shockwave S5 sentinel Suspension Seat Base - Black or White

Full dimensions are in the last 2 pictures. It moves both up and down and forward and back and can be set on 3 different modes being SOFT for flat water use, MEDIUN for moderate to rough conditions or FIRM for big sea use. It moves up to 4 inches vertically and 1.5 inches forward. The Shockwave S5 Sentinel provides comfort and safety to boaters, offering them an experience they’ve never had before. It offers a smoother, safer and more comfortable ride, protecting occupants from the shock of wave impact. Recreational boaters can stay out longer and travel farther with less fatigue. Its easy to install and can be paired with almost any seat. It's made of Marine grade aluminium die cast construction with tri-valent chromate primer and military grade powder coat in either black or white.