I wanted a shoe that I could wear in the swimming pool, and the Speedo is one brand that came up.  It is well made, and true to size. And comfortable, does not slip. Also, the color matched my bathing suit.
I paid $19.99 plus shipping.  I did find the identical one for less, but I stuck with Amazon, and the shoe was delivered  to me in three days, and that was regular shipping.  I was amazed.