Along with a pair of Ecco shoes I bought these insoles 2 years ago. Since then I wear them in the summer continuously barefoot. Washing in the washing machine you have well tolerated and do not get out of shape. Despite heel spurs I have a smooth ride. The foot does not sweat. A 100% purchase recommendation can I give with a clear conscience. It's really worth a few euros more to spend on this Frotteeinlegesohlen.