The only pair of shoes that I have been unable to wear in years. The toe box is very shallow, creating pressure on the top of your toes. Since the EVA material is elastic and returns to original shape, this does not "break in". Also, the liner is made with long, straight fibers, not looped which means that they compress and lose insulating qualities quickly. One of the few products where the original is of lower design quality than the cheap knock-offs.