My parents-in-law have a cottage on a small lake in SW Michigan.  It has a mixture of sand, mud, and stones.  Previous water shoes that I have bought were problematic.  The biggest problem was that the lining would come out because it was glued down.  So, I was looking for a quality water shoe that would last for awhile.  I wear Adidas shoes and know the quality and longevity of them so when I stumbled across these shoes, I knew there wouldn't be a problem.  These shoes are well constructed.  There is no liner that can detached.  Everything is stitched and solid.  I was more impressed with the comfort and drainage that these shoes provided.  I can wear these shoes casually inside or outside with great comfort.  And, when you come out of water, the water drains out of them almost immediately!  The only drawback was the price.  It was a little steep compared to other water shoes.  But, like I said, I would not trade these for others...