Ultra Stiff Sole The Morph 10 AAS sole has a stiffness index of 10.0. The exclusive Anatomical Arch Support made of TPU, allows the shoe to perfectly shape on your bow arch, making it the ideal sole for any type of foot. It is also Speedplay adapter compatible, for the lowest stack height between foot and pedal. Hi Tech Upper The unibody construction matches strategically placed large mesh inserts with ultrathin reinforced materials to deliver unrivalled breathability and targeted stability. A Performance Regular footbed provides greater support. Dial and Strap Closure The SLW2 dial closure system plus extra strap is the only one with step-by-step and full release in a single button. Asymmetric lacing removes pressure from the top of the foot for an optimum snug fit.