The Sonar is performance-oriented and especially tailored towards the needs of kite foiling/foil racing. Characteristically, it features a low profile which generates a low center of load transmission. The hybrid Curv construction improves force distribution with medium flex. On the inside a lumbar pad offers back support by following the natural curvature of the spine. Ergonomic leg straps allow for freedom of movement without pressure points. ION's sleek and lightweight Spectre Bar (including kite hook) amps up the direct feeling even further. Adjustable webbing connects the leg straps to the spreader bar and keeps the hook in a low position. Including Kite_knife 2.0 multitool.