I followed other buyers' advices and bought a size 8, my usual shoe size is 7.5, and they fit very well indeed.
All my shoes are medium width, so the Cleo Slide works perfectly for my feet. These sandals' straps are not adjustable
so if you have narrow feet then I am not sure if this is going to work for you though.

These are very light weight sandals and I almost forget that I have them on. Once I wear them I don't want to
take them off and I even wear them around the house.