• Size L: 6.5-7.5(M)/7.5-8.5(F) Size XL: 8-8.5(M)/9(F) (U.S. Size) * • Short, straight blade helps maintain proper kick/stroke tempo. * • Foot pocket offers comfort and superior flexibility. * • Soft silicone short blade training fins help you develop a stronger, faster flutter kick. * • Speed Fit clips for quick, easy adjustment.