Socks off to the inventor of the sandal, an innovation that has caused its share of bizarre tan lines. Leather straps look nice, but for regular amphibious-use choose webbing; polyester dries fastest. Velcro closures have a limited life and can tear open when walking in water, so if wet adventures are on the drawing board choose a model using clips or buckles. Beware of super-soft cushioning, as it can make feet prematurely tired. In time, sweat and dead skin will accumulate on the footbed and make sandals reek; to overcome the smell scrub with vinegar periodically. If the size is too small, expect to stub your toes. Too big, and you will trip over the front. Beware of straps or components that dig into bony ankles. When the straps are firm the footbed should stick like glue and the straps should not cut in.