Looking at the non-bootie Comp Evo Michelin, it has a bold new look that is a product of its new technical features. Starting at the top, the shin plate is adjustable for different sized calves. The straps are replaceable and have new, more secure closure system. There is an ankle hinge, unlike the Pro 2.1, which has mechanical stops at 18 degrees forward and 15 degrees rearward to prevent hyperflexion and hyperextension. Also, the second strap from the bottom is secured to the hinge pivot meaning that as the hinge moves, the strap follows rather than remaining stationary.