Unfortunately the shoes stink bestial after a short time. One can not say that it is foot perspiration - so I have no problems. The smell also comes not from the shoe interior, the shoes stink outside. Unfortunately, it all starts after 5 minutes of penetrative smell, so I have the smell while running in the open air in the nose. In enclosed spaces, I can no longer keep your shoes on. Visually, the shoes are in great condition - only I can no longer put so because it's just uncomfortable and embarrassing. My neighbor has returned their brand new Ecco-shoes in the store - they stank so Chemicals that they had health concerns, to put them on.