Here's a picture I found online of my favorite sandal ever, the Chaco Z2. You can run, walk through fast running streams, jump and turn on a dime like wearing tennis shoes with them. Tried some without the toe loop and instantly got rid of them. It's the toe loop that really makes them perform much more like shoes, but still give that breathability.
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I picked up an additional pair when they offered to make a custom chaco w/ pac-man (with ghosts) straps. Always get compliments when people notice them.