JBL Polymer blades deliver outstanding performance at an unbeatable price. Dive deeper and stay there longer. These blades feature an all new polymer mixture that is the best in its class. Much like the flagship Xcelerator Blade, It features a stiff foot base that becomes progressively flexible towards the tip. The reinforced base adds further rigidity to crucial areas. This balance of stiffness and flex ensures that each kick translates to maximum thrust. These superior properties are the result of an exclusive polymer blend that features nylon and carbon fiber. Polymer blades are set at a 22 degree angle, following the natural foot & leg geometry.