Kurz und knapp:Das war nix. Did not penetrate this hardwall! So far, I am happy with the purchase of this slip on casual sandal despite what I feel are some shortcomings that I have observed. This is why I dont buy shoes online. Smaller than I wanted for my kid so I guess they are now mine. Love this assortment for bracelets strung with occasional spacers. It was definitely a good buy. As mentioned by some other reviewers, to get the screwless finish you mount the rail over the brackets and then tighten two very small hex screws using the allen key provided. After searching for a bit and having some not work out, I am very pleased! Not too short where you have to leave your FUPA or back roll out.