It was stiff at first, but once I broke into it - this by far the best slipper I have ever worn. It even squeaked for a week. However, I know with this slipper, once it ages, it becomes the perfect fit. I bought two in fact. I suggest this slipper because the strap is comfortable, the design is cool, the sole is soft, and scores a 5/5 for comfort. I have owned a previous pair of this slipper as well. Teva does it again with this slipper!