The design of the Sun Surfer takes into account ergonomics, the efficiency of interaction of the cyclist with the Sun Surfer. The cycle is designed for riders of various sizes.
Leg length is one of the main variables, and so the pedal and seat positions are adjustable.
The rider has to sit in the cycle for long periods, so the seat is made from elastic materials. This also helps to accommodate riders of varying sizes. The cycle is raced in warm climates where the power from the sun is the greatest. To ensure the rider does not overheat, the fairing contains air vents located at the front and top of the cycle. Storing water for the cyclist in bottles behind the rider's seat reduces dehydration in the intense heat.