A water proof Birkenstock that fits like the traditional cork is exactly what I wanted to rinse off sand and be comfy. The only thing I am not 100% excited about is they are very flexible. I expected Birkenstocks to have a harder sole but they're more like regular flip flop.  I cant wear them all day because of this but they are perfect to wear to the pool or to sandy places and just rinse them off afterward. Is a flip flop worth 40 bucks? I think so.