When my sandals arrived I was shocked to see that they didn't even get close to my foot and wanted to put them back in, the long strap was too tight and I couldn't once drag my foot in them. I opened the box to repack and found this little card explaining how to adjust your sandals. The straps seem to form a continuous loop between the insole and outsole! My ankles and feet swell from time to time and when it happens even the loosest shoes feel tight but these sandals are the perfect cure, just adjust the straps and once the swelling goes down or face no more discomfort back the straps! I am absolutely obsessed with these sandals!