Three weeks ago my wife twisted her ankle very bad while wearing these. A couple of times before that incident she experienced instances where her ankle wanted to twist while walking and eventually it caught up with her. Must be something in the design of the shoe that must be flawed. Now she has a $150 pair of shoes that she cannot wear and can't return to amazon because time has passed according to the return  policy.Amazon and Geox should  look into this so it won't happen to anyone else.These were the second Geox shoes I purchased thru amazon. According to wife first pair are terrific.As a frequent Amazon customer it would be nice to get some type of compensation due to this unfortunate Geox purchase.