Going back to the arch support, I had to even put in my slip-in support insoles to make them slightly bearable to wear. Merci de signaler si mon commentaire vous a été utile ! Très facile pour les insérer, sadaptent parfaitement. The front is so nice and wide that there is PLENTY of room for your feet to spread out in them yet not so much that you are sliding around inside of them. Im giving them a full 5 stars on the basis of their seemingly good design and construction, and ease of attachment; hard to knock off any stars since I didnt use them for the purpose for which they are designed. (I wash everything before wearing. Welll im just tooooo thrilled ! Other wise the hooks look good and work good. Your breath has mostly carbon dioxide, but there is some carbon monoxide in it as well. This greatly reduced the stress on my wrists.