Mares X-Wing Fin BladeHigh quality elastomer X Wing fin blade. Tapered blade allowing an agile and high performance kick. Variable thickness for greater maneuverability without sacrificing length and strength of the fin blade. The X Wing freediving fins blade has a width of 19. 0cm and a length of 71. 3cm. The variable thickness of the blade allows high performance in kicking. The key features of the X Wing freediving fin blade are: Tapered blade made of high quality