To avoid scratches at the caseback, I always put a clear watchmaker sticker on it and change it every few days to avoid accumulating bacteria.
http://www.misterchrono.com/en/watc...er-35-mm-for-glasses-bottom-of-the-cases.html
Cost a few cents and it works with metal bracelets too because they can cause scratches easier.
Thanks for the links, I will try the watchgecko and phenomenato straps, too. I buy my straps at
www.miros-time.de. Good quality, sizes for large wrists available, delivery in Germany from one day to the next and prices from 10-15 Euro - you can change and exchange them, if they are dirty at almost no costs.
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