My son previously had this style of Teva and then we switched to the Teva K Hurricane Toe Pro sandal. The screws and the strings came out on the bottom. Birkenstock are my favourite style of sandal because they are so supportive to walk in. Wow, am I glad that I did! Never received a bad product from amazon until now! And they look good, too. I could not comment on corrosion resistance at this time. We look forward to using this well-constructed rack for years to come & we can strongly recommend it. I size up because they?re more comfortable a little bigger. However, they do stay put which to me is better than so loose you can slip in and out.