Our insole is only 1.5cm thick and is designed to be both flexible and adaptable, allowing it to mold well to the contours of both the foot and the shoe. So while it may look sturdy at first glance, we’ve had feedback from many happy customers who tell us that the insole instead adds an extra dimension of comfort without making the shoe cramped. If you find there are any problems with the fit when trying on the insole, it is also possible to adjust it by trimming away any excess.