This ISO 12402-5 certified 50N LPX Impact Buoyancy Aid has been designed with the Olympic foiling kite and windsurfers from multiple national teams. Multiple layers of differing density foam are strategically placed around the body for the best freedom of movement and protection against impact. This includes protection around the full circumference of the body, in particular the underarm ribs. The smoothed foam edges and neoprene forms a smooth aerodynamic contour to the body reducing drag and increasing performance. The central pocket is engineered into a step in the foam to create a flatter surface on top, even when full. An internal adjustable strap and silicone strips keeps the buoyancy aid in place while moving about your boat or board.